Translation Source string Target string
Beyond Linux From Scratch 12.2/postlfs_filesystems_initramfs — French
If you do decide to build an initramfs, the following scripts will provide a basis to do it. The scripts will allow specifying a rootfs via partition UUID or partition LABEL or a rootfs on an LVM logical volume. They do not support an encrypted root file system or mounting the rootfs over a network card. For a more complete capability see <ulink url="https://www.linuxfromscratch.org/hints/read.html"> the LFS Hints</ulink> or <ulink url="https://fedoraproject.org/wiki/Dracut">dracut</ulink>.
Si vous décidez de construire un initramfs, les scripts suivants fourniront les bases pour le faire. Les scripts autoriseront la spécification du rootfs via un UUID de partition ou un LABEL de partition ou un rootfs dans un volume logique LVM. Ils ne prennent pas en charge les systèmes de fichier racine chiffrés ou le montage des rootfs par des cartes réseaux. Pour plus d'informations sur les possibilités, voir <ulink url="https://www.linuxfromscratch.org/hints/read.html">les astuces LFS </ulink> (les astuces <ulink url="https://fr.linuxfromscratch.org/astuces/">traduites</ulink>) ou <ulink url="https://fedoraproject.org/wiki/Dracut">dracut</ulink>.
Beyond Linux From Scratch 12.2/postlfs_filesystems_initramfs — English
<userinput>cat &gt; /usr/sbin/mkinitramfs &lt;&lt; "EOF"
<literal>#!/bin/bash
# This file based in part on the mkinitramfs script for the LFS LiveCD
# written by Alexander E. Patrakov and Jeremy Huntwork.

copy()
{
local file

if [ "$2" = "lib" ]; then
file=$(PATH=/usr/lib type -p $1)
else
file=$(type -p $1)
fi

if [ -n "$file" ] ; then
cp $file $WDIR/usr/$2
else
echo "Missing required file: $1 for directory $2"
rm -rf $WDIR
exit 1
fi
}

if [ -z $1 ] ; then
INITRAMFS_FILE=initrd.img-no-kmods
else
KERNEL_VERSION=$1
INITRAMFS_FILE=initrd.img-$KERNEL_VERSION
fi

if [ -n "$KERNEL_VERSION" ] &amp;&amp; [ ! -d "/usr/lib/modules/$1" ] ; then
echo "No modules directory named $1"
exit 1
fi

printf "Creating $INITRAMFS_FILE... "

binfiles="sh cat cp dd killall ls mkdir mknod mount "
binfiles="$binfiles umount sed sleep ln rm uname"
binfiles="$binfiles readlink basename"

# Systemd installs udevadm in /bin. Other udev implementations have it in /sbin
if [ -x /usr/bin/udevadm ] ; then binfiles="$binfiles udevadm"; fi

sbinfiles="modprobe blkid switch_root"

# Optional files and locations
for f in mdadm mdmon udevd udevadm; do
if [ -x /usr/sbin/$f ] ; then sbinfiles="$sbinfiles $f"; fi
done

# Add lvm if present (cannot be done with the others because it
# also needs dmsetup
if [ -x /usr/sbin/lvm ] ; then sbinfiles="$sbinfiles lvm dmsetup"; fi

unsorted=$(mktemp /tmp/unsorted.XXXXXXXXXX)

DATADIR=/usr/share/mkinitramfs
INITIN=init.in

# Create a temporary working directory
WDIR=$(mktemp -d /tmp/initrd-work.XXXXXXXXXX)

# Create base directory structure
mkdir -p $WDIR/{dev,run,sys,proc,usr/{bin,lib/{firmware,modules},sbin}}
mkdir -p $WDIR/etc/{modprobe.d,udev/rules.d}
touch $WDIR/etc/modprobe.d/modprobe.conf
ln -s usr/bin $WDIR/bin
ln -s usr/lib $WDIR/lib
ln -s usr/sbin $WDIR/sbin
ln -s lib $WDIR/lib64

# Create necessary device nodes
mknod -m 640 $WDIR/dev/console c 5 1
mknod -m 664 $WDIR/dev/null c 1 3

# Install the udev configuration files
if [ -f /etc/udev/udev.conf ]; then
cp /etc/udev/udev.conf $WDIR/etc/udev/udev.conf
fi

for file in $(find /etc/udev/rules.d/ -type f) ; do
cp $file $WDIR/etc/udev/rules.d
done

# Install any firmware present
cp -a /usr/lib/firmware $WDIR/usr/lib

# Copy the RAID configuration file if present
if [ -f /etc/mdadm.conf ] ; then
cp /etc/mdadm.conf $WDIR/etc
fi

# Install the init file
install -m0755 $DATADIR/$INITIN $WDIR/init

if [ -n "$KERNEL_VERSION" ] ; then
if [ -x /usr/bin/kmod ] ; then
binfiles="$binfiles kmod"
else
binfiles="$binfiles lsmod"
sbinfiles="$sbinfiles insmod"
fi
fi

# Install basic binaries
for f in $binfiles ; do
ldd /usr/bin/$f | sed "s/\t//" | cut -d " " -f1 &gt;&gt; $unsorted
copy /usr/bin/$f bin
done

for f in $sbinfiles ; do
ldd /usr/sbin/$f | sed "s/\t//" | cut -d " " -f1 &gt;&gt; $unsorted
copy $f sbin
done

# Add udevd libraries if not in /usr/sbin
if [ -x /usr/lib/udev/udevd ] ; then
ldd /usr/lib/udev/udevd | sed "s/\t//" | cut -d " " -f1 &gt;&gt; $unsorted
elif [ -x /usr/lib/systemd/systemd-udevd ] ; then
ldd /usr/lib/systemd/systemd-udevd | sed "s/\t//" | cut -d " " -f1 &gt;&gt; $unsorted
fi

# Add module symlinks if appropriate
if [ -n "$KERNEL_VERSION" ] &amp;&amp; [ -x /usr/bin/kmod ] ; then
ln -s kmod $WDIR/usr/bin/lsmod
ln -s kmod $WDIR/usr/bin/insmod
fi

# Add lvm symlinks if appropriate
# Also copy the lvm.conf file
if [ -x /usr/sbin/lvm ] ; then
ln -s lvm $WDIR/usr/sbin/lvchange
ln -s lvm $WDIR/usr/sbin/lvrename
ln -s lvm $WDIR/usr/sbin/lvextend
ln -s lvm $WDIR/usr/sbin/lvcreate
ln -s lvm $WDIR/usr/sbin/lvdisplay
ln -s lvm $WDIR/usr/sbin/lvscan

ln -s lvm $WDIR/usr/sbin/pvchange
ln -s lvm $WDIR/usr/sbin/pvck
ln -s lvm $WDIR/usr/sbin/pvcreate
ln -s lvm $WDIR/usr/sbin/pvdisplay
ln -s lvm $WDIR/usr/sbin/pvscan

ln -s lvm $WDIR/usr/sbin/vgchange
ln -s lvm $WDIR/usr/sbin/vgcreate
ln -s lvm $WDIR/usr/sbin/vgscan
ln -s lvm $WDIR/usr/sbin/vgrename
ln -s lvm $WDIR/usr/sbin/vgck
# Conf file(s)
cp -a /etc/lvm $WDIR/etc
fi

# Install libraries
sort $unsorted | uniq | while read library ; do
# linux-vdso and linux-gate are pseudo libraries and do not correspond to a file
# libsystemd-shared is in /lib/systemd, so it is not found by copy, and
# it is copied below anyway
if [[ "$library" == linux-vdso.so.1 ]] ||
[[ "$library" == linux-gate.so.1 ]] ||
[[ "$library" == libsystemd-shared* ]]; then
continue
fi

copy $library lib
done

if [ -d /usr/lib/udev ]; then
cp -a /usr/lib/udev $WDIR/usr/lib
fi
if [ -d /usr/lib/systemd ]; then
cp -a /usr/lib/systemd $WDIR/usr/lib
fi
if [ -d /usr/lib/elogind ]; then
cp -a /usr/lib/elogind $WDIR/usr/lib
fi

# Install the kernel modules if requested
if [ -n "$KERNEL_VERSION" ]; then
find \
/usr/lib/modules/$KERNEL_VERSION/kernel/{crypto,fs,lib} \
/usr/lib/modules/$KERNEL_VERSION/kernel/drivers/{block,ata,nvme,md,firewire} \
/usr/lib/modules/$KERNEL_VERSION/kernel/drivers/{scsi,message,pcmcia,virtio} \
/usr/lib/modules/$KERNEL_VERSION/kernel/drivers/usb/{host,storage} \
-type f 2&gt; /dev/null | cpio --make-directories -p --quiet $WDIR

cp /usr/lib/modules/$KERNEL_VERSION/modules.{builtin,order} \
$WDIR/usr/lib/modules/$KERNEL_VERSION
if [ -f /usr/lib/modules/$KERNEL_VERSION/modules.builtin.modinfo ]; then
cp /usr/lib/modules/$KERNEL_VERSION/modules.builtin.modinfo \
$WDIR/usr/lib/modules/$KERNEL_VERSION
fi

depmod -b $WDIR $KERNEL_VERSION
fi

( cd $WDIR ; find . | cpio -o -H newc --quiet | gzip -9 ) &gt; $INITRAMFS_FILE

# Prepare early loading of microcode if available
if ls /usr/lib/firmware/intel-ucode/* &gt;/dev/null 2&gt;&amp;1 ||
ls /usr/lib/firmware/amd-ucode/* &gt;/dev/null 2&gt;&amp;1; then

# first empty WDIR to reuse it
rm -r $WDIR/*

DSTDIR=$WDIR/kernel/x86/microcode
mkdir -p $DSTDIR

if [ -d /usr/lib/firmware/amd-ucode ]; then
cat /usr/lib/firmware/amd-ucode/microcode_amd*.bin &gt; $DSTDIR/AuthenticAMD.bin
fi

if [ -d /usr/lib/firmware/intel-ucode ]; then
cat /usr/lib/firmware/intel-ucode/* &gt; $DSTDIR/GenuineIntel.bin
fi

( cd $WDIR; find . | cpio -o -H newc --quiet ) &gt; microcode.img
cat microcode.img $INITRAMFS_FILE &gt; tmpfile
mv tmpfile $INITRAMFS_FILE
rm microcode.img
fi

# Remove the temporary directories and files
rm -rf $WDIR $unsorted
printf "done.\n"
</literal>
EOF

chmod 0755 /usr/sbin/mkinitramfs</userinput>
<userinput>cat &gt; /usr/sbin/mkinitramfs &lt;&lt; "EOF"
<literal>#!/bin/bash
# This file based in part on the mkinitramfs script for the LFS LiveCD
# written by Alexander E. Patrakov and Jeremy Huntwork.

copy()
{
local file

if [ "$2" = "lib" ]; then
file=$(PATH=/usr/lib type -p $1)
else
file=$(type -p $1)
fi

if [ -n "$file" ] ; then
cp $file $WDIR/usr/$2
else
echo "Missing required file: $1 for directory $2"
rm -rf $WDIR
exit 1
fi
}

if [ -z $1 ] ; then
INITRAMFS_FILE=initrd.img-no-kmods
else
KERNEL_VERSION=$1
INITRAMFS_FILE=initrd.img-$KERNEL_VERSION
fi

if [ -n "$KERNEL_VERSION" ] &amp;&amp; [ ! -d "/usr/lib/modules/$1" ] ; then
echo "No modules directory named $1"
exit 1
fi

printf "Creating $INITRAMFS_FILE... "

binfiles="sh cat cp dd killall ls mkdir mknod mount "
binfiles="$binfiles umount sed sleep ln rm uname"
binfiles="$binfiles readlink basename"

# Systemd installs udevadm in /bin. Other udev implementations have it in /sbin
if [ -x /usr/bin/udevadm ] ; then binfiles="$binfiles udevadm"; fi

sbinfiles="modprobe blkid switch_root"

# Optional files and locations
for f in mdadm mdmon udevd udevadm; do
if [ -x /usr/sbin/$f ] ; then sbinfiles="$sbinfiles $f"; fi
done

# Add lvm if present (cannot be done with the others because it
# also needs dmsetup
if [ -x /usr/sbin/lvm ] ; then sbinfiles="$sbinfiles lvm dmsetup"; fi

unsorted=$(mktemp /tmp/unsorted.XXXXXXXXXX)

DATADIR=/usr/share/mkinitramfs
INITIN=init.in

# Create a temporary working directory
WDIR=$(mktemp -d /tmp/initrd-work.XXXXXXXXXX)

# Create base directory structure
mkdir -p $WDIR/{dev,run,sys,proc,usr/{bin,lib/{firmware,modules},sbin}}
mkdir -p $WDIR/etc/{modprobe.d,udev/rules.d}
touch $WDIR/etc/modprobe.d/modprobe.conf
ln -s usr/bin $WDIR/bin
ln -s usr/lib $WDIR/lib
ln -s usr/sbin $WDIR/sbin
ln -s lib $WDIR/lib64

# Create necessary device nodes
mknod -m 640 $WDIR/dev/console c 5 1
mknod -m 664 $WDIR/dev/null c 1 3

# Install the udev configuration files
if [ -f /etc/udev/udev.conf ]; then
cp /etc/udev/udev.conf $WDIR/etc/udev/udev.conf
fi

for file in $(find /etc/udev/rules.d/ -type f) ; do
cp $file $WDIR/etc/udev/rules.d
done

# Install any firmware present
cp -a /usr/lib/firmware $WDIR/usr/lib

# Copy the RAID configuration file if present
if [ -f /etc/mdadm.conf ] ; then
cp /etc/mdadm.conf $WDIR/etc
fi

# Install the init file
install -m0755 $DATADIR/$INITIN $WDIR/init

if [ -n "$KERNEL_VERSION" ] ; then
if [ -x /usr/bin/kmod ] ; then
binfiles="$binfiles kmod"
else
binfiles="$binfiles lsmod"
sbinfiles="$sbinfiles insmod"
fi
fi

# Install basic binaries
for f in $binfiles ; do
ldd /usr/bin/$f | sed "s/\t//" | cut -d " " -f1 &gt;&gt; $unsorted
copy /usr/bin/$f bin
done

for f in $sbinfiles ; do
ldd /usr/sbin/$f | sed "s/\t//" | cut -d " " -f1 &gt;&gt; $unsorted
copy $f sbin
done

# Add udevd libraries if not in /usr/sbin
if [ -x /usr/lib/udev/udevd ] ; then
ldd /usr/lib/udev/udevd | sed "s/\t//" | cut -d " " -f1 &gt;&gt; $unsorted
elif [ -x /usr/lib/systemd/systemd-udevd ] ; then
ldd /usr/lib/systemd/systemd-udevd | sed "s/\t//" | cut -d " " -f1 &gt;&gt; $unsorted
fi

# Add module symlinks if appropriate
if [ -n "$KERNEL_VERSION" ] &amp;&amp; [ -x /usr/bin/kmod ] ; then
ln -s kmod $WDIR/usr/bin/lsmod
ln -s kmod $WDIR/usr/bin/insmod
fi

# Add lvm symlinks if appropriate
# Also copy the lvm.conf file
if [ -x /usr/sbin/lvm ] ; then
ln -s lvm $WDIR/usr/sbin/lvchange
ln -s lvm $WDIR/usr/sbin/lvrename
ln -s lvm $WDIR/usr/sbin/lvextend
ln -s lvm $WDIR/usr/sbin/lvcreate
ln -s lvm $WDIR/usr/sbin/lvdisplay
ln -s lvm $WDIR/usr/sbin/lvscan

ln -s lvm $WDIR/usr/sbin/pvchange
ln -s lvm $WDIR/usr/sbin/pvck
ln -s lvm $WDIR/usr/sbin/pvcreate
ln -s lvm $WDIR/usr/sbin/pvdisplay
ln -s lvm $WDIR/usr/sbin/pvscan

ln -s lvm $WDIR/usr/sbin/vgchange
ln -s lvm $WDIR/usr/sbin/vgcreate
ln -s lvm $WDIR/usr/sbin/vgscan
ln -s lvm $WDIR/usr/sbin/vgrename
ln -s lvm $WDIR/usr/sbin/vgck
# Conf file(s)
cp -a /etc/lvm $WDIR/etc
fi

# Install libraries
sort $unsorted | uniq | while read library ; do
# linux-vdso and linux-gate are pseudo libraries and do not correspond to a file
# libsystemd-shared is in /lib/systemd, so it is not found by copy, and
# it is copied below anyway
if [[ "$library" == linux-vdso.so.1 ]] ||
[[ "$library" == linux-gate.so.1 ]] ||
[[ "$library" == libsystemd-shared* ]]; then
continue
fi

copy $library lib
done

if [ -d /usr/lib/udev ]; then
cp -a /usr/lib/udev $WDIR/usr/lib
fi
if [ -d /usr/lib/systemd ]; then
cp -a /usr/lib/systemd $WDIR/usr/lib
fi
if [ -d /usr/lib/elogind ]; then
cp -a /usr/lib/elogind $WDIR/usr/lib
fi

# Install the kernel modules if requested
if [ -n "$KERNEL_VERSION" ]; then
find \
/usr/lib/modules/$KERNEL_VERSION/kernel/{crypto,fs,lib} \
/usr/lib/modules/$KERNEL_VERSION/kernel/drivers/{block,ata,nvme,md,firewire} \
/usr/lib/modules/$KERNEL_VERSION/kernel/drivers/{scsi,message,pcmcia,virtio} \
/usr/lib/modules/$KERNEL_VERSION/kernel/drivers/usb/{host,storage} \
-type f 2&gt; /dev/null | cpio --make-directories -p --quiet $WDIR

cp /usr/lib/modules/$KERNEL_VERSION/modules.{builtin,order} \
$WDIR/usr/lib/modules/$KERNEL_VERSION
if [ -f /usr/lib/modules/$KERNEL_VERSION/modules.builtin.modinfo ]; then
cp /usr/lib/modules/$KERNEL_VERSION/modules.builtin.modinfo \
$WDIR/usr/lib/modules/$KERNEL_VERSION
fi

depmod -b $WDIR $KERNEL_VERSION
fi

( cd $WDIR ; find . | cpio -o -H newc --quiet | gzip -9 ) &gt; $INITRAMFS_FILE

# Prepare early loading of microcode if available
if ls /usr/lib/firmware/intel-ucode/* &gt;/dev/null 2&gt;&amp;1 ||
ls /usr/lib/firmware/amd-ucode/* &gt;/dev/null 2&gt;&amp;1; then

# first empty WDIR to reuse it
rm -r $WDIR/*

DSTDIR=$WDIR/kernel/x86/microcode
mkdir -p $DSTDIR

if [ -d /usr/lib/firmware/amd-ucode ]; then
cat /usr/lib/firmware/amd-ucode/microcode_amd*.bin &gt; $DSTDIR/AuthenticAMD.bin
fi

if [ -d /usr/lib/firmware/intel-ucode ]; then
cat /usr/lib/firmware/intel-ucode/* &gt; $DSTDIR/GenuineIntel.bin
fi

( cd $WDIR; find . | cpio -o -H newc --quiet ) &gt; microcode.img
cat microcode.img $INITRAMFS_FILE &gt; tmpfile
mv tmpfile $INITRAMFS_FILE
rm microcode.img
fi

# Remove the temporary directories and files
rm -rf $WDIR $unsorted
printf "done.\n"
</literal>
EOF

chmod 0755 /usr/sbin/mkinitramfs</userinput>
Beyond Linux From Scratch 12.2/postlfs_filesystems_initramfs — French
<userinput>cat &gt; /usr/sbin/mkinitramfs &lt;&lt; "EOF"
<literal>#!/bin/bash
# This file based in part on the mkinitramfs script for the LFS LiveCD
# written by Alexander E. Patrakov and Jeremy Huntwork.

copy()
{
local file

if [ "$2" = "lib" ]; then
file=$(PATH=/usr/lib type -p $1)
else
file=$(type -p $1)
fi

if [ -n "$file" ] ; then
cp $file $WDIR/usr/$2
else
echo "Missing required file: $1 for directory $2"
rm -rf $WDIR
exit 1
fi
}

if [ -z $1 ] ; then
INITRAMFS_FILE=initrd.img-no-kmods
else
KERNEL_VERSION=$1
INITRAMFS_FILE=initrd.img-$KERNEL_VERSION
fi

if [ -n "$KERNEL_VERSION" ] &amp;&amp; [ ! -d "/usr/lib/modules/$1" ] ; then
echo "No modules directory named $1"
exit 1
fi

printf "Creating $INITRAMFS_FILE... "

binfiles="sh cat cp dd killall ls mkdir mknod mount "
binfiles="$binfiles umount sed sleep ln rm uname"
binfiles="$binfiles readlink basename"

# Systemd installs udevadm in /bin. Other udev implementations have it in /sbin
if [ -x /usr/bin/udevadm ] ; then binfiles="$binfiles udevadm"; fi

sbinfiles="modprobe blkid switch_root"

# Optional files and locations
for f in mdadm mdmon udevd udevadm; do
if [ -x /usr/sbin/$f ] ; then sbinfiles="$sbinfiles $f"; fi
done

# Add lvm if present (cannot be done with the others because it
# also needs dmsetup
if [ -x /usr/sbin/lvm ] ; then sbinfiles="$sbinfiles lvm dmsetup"; fi

unsorted=$(mktemp /tmp/unsorted.XXXXXXXXXX)

DATADIR=/usr/share/mkinitramfs
INITIN=init.in

# Create a temporary working directory
WDIR=$(mktemp -d /tmp/initrd-work.XXXXXXXXXX)

# Create base directory structure
mkdir -p $WDIR/{dev,run,sys,proc,usr/{bin,lib/{firmware,modules},sbin}}
mkdir -p $WDIR/etc/{modprobe.d,udev/rules.d}
touch $WDIR/etc/modprobe.d/modprobe.conf
ln -s usr/bin $WDIR/bin
ln -s usr/lib $WDIR/lib
ln -s usr/sbin $WDIR/sbin
ln -s lib $WDIR/lib64

# Create necessary device nodes
mknod -m 640 $WDIR/dev/console c 5 1
mknod -m 664 $WDIR/dev/null c 1 3

# Install the udev configuration files
if [ -f /etc/udev/udev.conf ]; then
cp /etc/udev/udev.conf $WDIR/etc/udev/udev.conf
fi

for file in $(find /etc/udev/rules.d/ -type f) ; do
cp $file $WDIR/etc/udev/rules.d
done

# Install any firmware present
cp -a /usr/lib/firmware $WDIR/usr/lib

# Copy the RAID configuration file if present
if [ -f /etc/mdadm.conf ] ; then
cp /etc/mdadm.conf $WDIR/etc
fi

# Install the init file
install -m0755 $DATADIR/$INITIN $WDIR/init

if [ -n "$KERNEL_VERSION" ] ; then
if [ -x /usr/bin/kmod ] ; then
binfiles="$binfiles kmod"
else
binfiles="$binfiles lsmod"
sbinfiles="$sbinfiles insmod"
fi
fi

# Install basic binaries
for f in $binfiles ; do
ldd /usr/bin/$f | sed "s/\t//" | cut -d " " -f1 &gt;&gt; $unsorted
copy /usr/bin/$f bin
done

for f in $sbinfiles ; do
ldd /usr/sbin/$f | sed "s/\t//" | cut -d " " -f1 &gt;&gt; $unsorted
copy $f sbin
done

# Add udevd libraries if not in /usr/sbin
if [ -x /usr/lib/udev/udevd ] ; then
ldd /usr/lib/udev/udevd | sed "s/\t//" | cut -d " " -f1 &gt;&gt; $unsorted
elif [ -x /usr/lib/systemd/systemd-udevd ] ; then
ldd /usr/lib/systemd/systemd-udevd | sed "s/\t//" | cut -d " " -f1 &gt;&gt; $unsorted
fi

# Add module symlinks if appropriate
if [ -n "$KERNEL_VERSION" ] &amp;&amp; [ -x /usr/bin/kmod ] ; then
ln -s kmod $WDIR/usr/bin/lsmod
ln -s kmod $WDIR/usr/bin/insmod
fi

# Add lvm symlinks if appropriate
# Also copy the lvm.conf file
if [ -x /usr/sbin/lvm ] ; then
ln -s lvm $WDIR/usr/sbin/lvchange
ln -s lvm $WDIR/usr/sbin/lvrename
ln -s lvm $WDIR/usr/sbin/lvextend
ln -s lvm $WDIR/usr/sbin/lvcreate
ln -s lvm $WDIR/usr/sbin/lvdisplay
ln -s lvm $WDIR/usr/sbin/lvscan

ln -s lvm $WDIR/usr/sbin/pvchange
ln -s lvm $WDIR/usr/sbin/pvck
ln -s lvm $WDIR/usr/sbin/pvcreate
ln -s lvm $WDIR/usr/sbin/pvdisplay
ln -s lvm $WDIR/usr/sbin/pvscan

ln -s lvm $WDIR/usr/sbin/vgchange
ln -s lvm $WDIR/usr/sbin/vgcreate
ln -s lvm $WDIR/usr/sbin/vgscan
ln -s lvm $WDIR/usr/sbin/vgrename
ln -s lvm $WDIR/usr/sbin/vgck
# Conf file(s)
cp -a /etc/lvm $WDIR/etc
fi

# Install libraries
sort $unsorted | uniq | while read library ; do
# linux-vdso and linux-gate are pseudo libraries and do not correspond to a file
# libsystemd-shared is in /lib/systemd, so it is not found by copy, and
# it is copied below anyway
if [[ "$library" == linux-vdso.so.1 ]] ||
[[ "$library" == linux-gate.so.1 ]] ||
[[ "$library" == libsystemd-shared* ]]; then
continue
fi

copy $library lib
done

if [ -d /usr/lib/udev ]; then
cp -a /usr/lib/udev $WDIR/usr/lib
fi
if [ -d /usr/lib/systemd ]; then
cp -a /usr/lib/systemd $WDIR/usr/lib
fi
if [ -d /usr/lib/elogind ]; then
cp -a /usr/lib/elogind $WDIR/usr/lib
fi

# Install the kernel modules if requested
if [ -n "$KERNEL_VERSION" ]; then
find \
/usr/lib/modules/$KERNEL_VERSION/kernel/{crypto,fs,lib} \
/usr/lib/modules/$KERNEL_VERSION/kernel/drivers/{block,ata,nvme,md,firewire} \
/usr/lib/modules/$KERNEL_VERSION/kernel/drivers/{scsi,message,pcmcia,virtio} \
/usr/lib/modules/$KERNEL_VERSION/kernel/drivers/usb/{host,storage} \
-type f 2&gt; /dev/null | cpio --make-directories -p --quiet $WDIR

cp /usr/lib/modules/$KERNEL_VERSION/modules.{builtin,order} \
$WDIR/usr/lib/modules/$KERNEL_VERSION
if [ -f /usr/lib/modules/$KERNEL_VERSION/modules.builtin.modinfo ]; then
cp /usr/lib/modules/$KERNEL_VERSION/modules.builtin.modinfo \
$WDIR/usr/lib/modules/$KERNEL_VERSION
fi

depmod -b $WDIR $KERNEL_VERSION
fi

( cd $WDIR ; find . | cpio -o -H newc --quiet | gzip -9 ) &gt; $INITRAMFS_FILE

# Prepare early loading of microcode if available
if ls /usr/lib/firmware/intel-ucode/* &gt;/dev/null 2&gt;&amp;1 ||
ls /usr/lib/firmware/amd-ucode/* &gt;/dev/null 2&gt;&amp;1; then

# first empty WDIR to reuse it
rm -r $WDIR/*

DSTDIR=$WDIR/kernel/x86/microcode
mkdir -p $DSTDIR

if [ -d /usr/lib/firmware/amd-ucode ]; then
cat /usr/lib/firmware/amd-ucode/microcode_amd*.bin &gt; $DSTDIR/AuthenticAMD.bin
fi

if [ -d /usr/lib/firmware/intel-ucode ]; then
cat /usr/lib/firmware/intel-ucode/* &gt; $DSTDIR/GenuineIntel.bin
fi

( cd $WDIR; find . | cpio -o -H newc --quiet ) &gt; microcode.img
cat microcode.img $INITRAMFS_FILE &gt; tmpfile
mv tmpfile $INITRAMFS_FILE
rm microcode.img
fi

# Remove the temporary directories and files
rm -rf $WDIR $unsorted
printf "done.\n"
</literal>
EOF

chmod 0755 /usr/sbin/mkinitramfs</userinput>
<userinput>cat &gt; /usr/sbin/mkinitramfs &lt;&lt; "EOF"
<literal>#!/bin/bash
# Ce fichier se base en partie sur le script mkinitramfs du LiveCD LFS
# écrit par Alexander E. Patrakov et Jeremy Huntwork.

copy()
{
local file

if [ "$2" = "lib" ]; then
file=$(PATH=/usr/lib type -p $1)
else
file=$(type -p $1)
fi

if [ -n "$file" ] ; then
cp $file $WDIR/usr/$2
else
echo "Fichier requis manquant : $1 pour le répertoire $2"
rm -rf $WDIR
exit 1
fi
}

if [ -z $1 ] ; then
INITRAMFS_FILE=initrd.img-no-kmods
else
KERNEL_VERSION=$1
INITRAMFS_FILE=initrd.img-$KERNEL_VERSION
fi

if [ -n "$KERNEL_VERSION" ] &amp;&amp; [ ! -d "/usr/lib/modules/$1" ] ; then
echo "Aucun répertoire de modules nommé $1"
exit 1
fi

printf "Création de $INITRAMFS_FILE... "

binfiles="sh cat cp dd killall ls mkdir mknod mount "
binfiles="$binfiles umount sed sleep ln rm uname"
binfiles="$binfiles readlink basename"

# Systemd installe udevadm dans /bin. Les autres implementations d'udev le placent dans /sbin
if [ -x /usr/bin/udevadm ] ; then binfiles="$binfiles udevadm"; fi

sbinfiles="modprobe blkid switch_root"

# Fichiers en emplacements facultatifs
for f in mdadm mdmon udevd udevadm; do
if [ -x /usr/sbin/$f ] ; then sbinfiles="$sbinfiles $f"; fi
done

# Ajout de lvm s'il est présent (impossible de le faire avec le reste car il
# nécessite également dmsetup)
if [ -x /usr/sbin/lvm ] ; then sbinfiles="$sbinfiles lvm dmsetup"; fi

unsorted=$(mktemp /tmp/unsorted.XXXXXXXXXX)

DATADIR=/usr/share/mkinitramfs
INITIN=init.in

# Création d'un répertoire de travail temporaire
WDIR=$(mktemp -d /tmp/initrd-work.XXXXXXXXXX)

# Création d'une structure de répertoires de base
mkdir -p $WDIR/{dev,run,sys,proc,usr/{bin,lib/{firmware,modules},sbin}}
mkdir -p $WDIR/etc/{modprobe.d,udev/rules.d}
touch $WDIR/etc/modprobe.d/modprobe.conf
ln -s usr/bin $WDIR/bin
ln -s usr/lib $WDIR/lib
ln -s usr/sbin $WDIR/sbin
ln -s lib $WDIR/lib64

# Création des nœuds de périphérique nécessaires
mknod -m 640 $WDIR/dev/console c 5 1
mknod -m 664 $WDIR/dev/null c 1 3

# Installation des fichiers de configuration d'udev
if [ -f /etc/udev/udev.conf ]; then
cp /etc/udev/udev.conf $WDIR/etc/udev/udev.conf
fi

for file in $(find /etc/udev/rules.d/ -type f) ; do
cp $file $WDIR/etc/udev/rules.d
done

# Installation des micrologiciels présents
cp -a /usr/lib/firmware $WDIR/usr/lib

# Copie du fichier de configuration RAID s'il est présent
if [ -f /etc/mdadm.conf ] ; then
cp /etc/mdadm.conf $WDIR/etc
fi

# Installation du fichier d'init
install -m0755 $DATADIR/$INITIN $WDIR/init

if [ -n "$KERNEL_VERSION" ] ; then
if [ -x /usr/bin/kmod ] ; then
binfiles="$binfiles kmod"
else
binfiles="$binfiles lsmod"
sbinfiles="$sbinfiles insmod"
fi
fi

# Installation des binaires de base
for f in $binfiles ; do
ldd /usr/bin/$f | sed "s/\t//" | cut -d " " -f1 &gt;&gt; $unsorted
copy /usr/bin/$f bin
done

for f in $sbinfiles ; do
ldd /usr/sbin/$f | sed "s/\t//" | cut -d " " -f1 &gt;&gt; $unsorted
copy $f sbin
done

# Ajout des bibliothèques udevd s'il n'est pas dans /usr/sbin
if [ -x /usr/lib/udev/udevd ] ; then
ldd /usr/lib/udev/udevd | sed "s/\t//" | cut -d " " -f1 &gt;&gt; $unsorted
elif [ -x /usr/lib/systemd/systemd-udevd ] ; then
ldd /usr/lib/systemd/systemd-udevd | sed "s/\t//" | cut -d " " -f1 &gt;&gt; $unsorted
fi

# Ajout des liens symboliques des modules si nécessaire
if [ -n "$KERNEL_VERSION" ] &amp;&amp; [ -x /usr/bin/kmod ] ; then
ln -s kmod $WDIR/usr/bin/lsmod
ln -s kmod $WDIR/usr/bin/insmod
fi

# Ajout des liens symboliques de lvm si nécessaire
# Également, copie du fichier lvm.conf
if [ -x /usr/sbin/lvm ] ; then
ln -s lvm $WDIR/usr/sbin/lvchange
ln -s lvm $WDIR/usr/sbin/lvrename
ln -s lvm $WDIR/usr/sbin/lvextend
ln -s lvm $WDIR/usr/sbin/lvcreate
ln -s lvm $WDIR/usr/sbin/lvdisplay
ln -s lvm $WDIR/usr/sbin/lvscan

ln -s lvm $WDIR/usr/sbin/pvchange
ln -s lvm $WDIR/usr/sbin/pvck
ln -s lvm $WDIR/usr/sbin/pvcreate
ln -s lvm $WDIR/usr/sbin/pvdisplay
ln -s lvm $WDIR/usr/sbin/pvscan

ln -s lvm $WDIR/usr/sbin/vgchange
ln -s lvm $WDIR/usr/sbin/vgcreate
ln -s lvm $WDIR/usr/sbin/vgscan
ln -s lvm $WDIR/usr/sbin/vgrename
ln -s lvm $WDIR/usr/sbin/vgck
# Fichier de configuration
cp -a /etc/lvm $WDIR/etc
fi

# Installation des bibliothèques
sort $unsorted | uniq | while read library ; do
# linux-vdso et linux-gate sont des pseudo-bibliothèque et ne correspondent pas à un fichier
# libsystemd-shared se trouve dans /lib/systemd, donc il n'est pas trouvé par la copie, mais
# il est tout de même copié plus bas
if [[ "$library" == linux-vdso.so.1 ]] ||
[[ "$library" == linux-gate.so.1 ]] ||
[[ "$library" == libsystemd-shared* ]]; then
continue
fi

copy $library lib
done

if [ -d /usr/lib/udev ]; then
cp -a /usr/lib/udev $WDIR/usr/lib
fi
if [ -d /usr/lib/systemd ]; then
cp -a /usr/lib/systemd $WDIR/usr/lib
fi
if [ -d /usr/lib/elogind ]; then
cp -a /usr/lib/elogind $WDIR/usr/lib
fi

# Installation des modules du noyau si nécessaire
if [ -n "$KERNEL_VERSION" ]; then
find \
/usr/lib/modules/$KERNEL_VERSION/kernel/{crypto,fs,lib} \
/usr/lib/modules/$KERNEL_VERSION/kernel/drivers/{block,ata,nvme,md,firewire} \
/usr/lib/modules/$KERNEL_VERSION/kernel/drivers/{scsi,message,pcmcia,virtio} \
/usr/lib/modules/$KERNEL_VERSION/kernel/drivers/usb/{host,storage} \
-type f 2&gt; /dev/null | cpio --make-directories -p --quiet $WDIR

cp /usr/lib/modules/$KERNEL_VERSION/modules.{builtin,order} \
$WDIR/usr/lib/modules/$KERNEL_VERSION
if [ -f /usr/lib/modules/$KERNEL_VERSION/modules.builtin.modinfo ]; then
cp /usr/lib/modules/$KERNEL_VERSION/modules.builtin.modinfo \
$WDIR/usr/lib/modules/$KERNEL_VERSION
fi

depmod -b $WDIR $KERNEL_VERSION
fi

( cd $WDIR ; find . | cpio -o -H newc --quiet | gzip -9 ) &gt; $INITRAMFS_FILE

# Preparation du chargement au plus tôt du microcode s'il est disponible
if ls /usr/lib/firmware/intel-ucode/* &gt;/dev/null 2&gt;&amp;1 ||
ls /usr/lib/firmware/amd-ucode/* &gt;/dev/null 2&gt;&amp;1; then

# on commence par vider WDIR pour le réutiliser
rm -r $WDIR/*

DSTDIR=$WDIR/kernel/x86/microcode
mkdir -p $DSTDIR

if [ -d /usr/lib/firmware/amd-ucode ]; then
cat /usr/lib/firmware/amd-ucode/microcode_amd*.bin &gt; $DSTDIR/AuthenticAMD.bin
fi

if [ -d /usr/lib/firmware/intel-ucode ]; then
cat /usr/lib/firmware/intel-ucode/* &gt; $DSTDIR/GenuineIntel.bin
fi

( cd $WDIR; find . | cpio -o -H newc --quiet ) &gt; microcode.img
cat microcode.img $INITRAMFS_FILE &gt; tmpfile
mv tmpfile $INITRAMFS_FILE
rm microcode.img
fi

# Suppression des répertoires et des fichiers temporaires
rm -rf $WDIR $unsorted
printf "done.\n"
</literal>
EOF

chmod 0755 /usr/sbin/mkinitramfs</userinput>
Beyond Linux From Scratch 12.2/postlfs_filesystems_initramfs — English
<userinput>mkdir -p /usr/share/mkinitramfs &amp;&amp;
cat &gt; /usr/share/mkinitramfs/init.in &lt;&lt; "EOF"
<literal>#!/bin/sh

PATH=/usr/bin:/usr/sbin
export PATH

problem()
{
printf "Encountered a problem!\n\nDropping you to a shell.\n\n"
sh
}

no_device()
{
printf "The device %s, which is supposed to contain the\n" $1
printf "root file system, does not exist.\n"
printf "Please fix this problem and exit this shell.\n\n"
}

no_mount()
{
printf "Could not mount device %s\n" $1
printf "Sleeping forever. Please reboot and fix the kernel command line.\n\n"
printf "Maybe the device is formatted with an unsupported file system?\n\n"
printf "Or maybe filesystem type autodetection went wrong, in which case\n"
printf "you should add the rootfstype=... parameter to the kernel command line.\n\n"
printf "Available partitions:\n"
}

do_mount_root()
{
mkdir /.root
[ -n "$rootflags" ] &amp;&amp; rootflags="$rootflags,"
rootflags="$rootflags$ro"

case "$root" in
/dev/* ) device=$root ;;
UUID=* ) eval $root; device="/dev/disk/by-uuid/$UUID" ;;
PARTUUID=*) eval $root; device="/dev/disk/by-partuuid/$PARTUUID" ;;
LABEL=* ) eval $root; device="/dev/disk/by-label/$LABEL" ;;
"" ) echo "No root device specified." ; problem ;;
esac

while [ ! -b "$device" ] ; do
no_device $device
problem
done

if ! mount -n -t "$rootfstype" -o "$rootflags" "$device" /.root ; then
no_mount $device
cat /proc/partitions
while true ; do sleep 10000 ; done
else
echo "Successfully mounted device $root"
fi
}

do_try_resume()
{
case "$resume" in
UUID=* ) eval $resume; resume="/dev/disk/by-uuid/$UUID" ;;
LABEL=*) eval $resume; resume="/dev/disk/by-label/$LABEL" ;;
esac

if $noresume || ! [ -b "$resume" ]; then return; fi

ls -lH "$resume" | ( read x x x x maj min x
echo -n ${maj%,}:$min &gt; /sys/power/resume )
}

init=/sbin/init
root=
rootdelay=
rootfstype=auto
ro="ro"
rootflags=
device=
resume=
noresume=false

mount -n -t devtmpfs devtmpfs /dev
mount -n -t proc proc /proc
mount -n -t sysfs sysfs /sys
mount -n -t tmpfs tmpfs /run

read -r cmdline &lt; /proc/cmdline

for param in $cmdline ; do
case $param in
init=* ) init=${param#init=} ;;
root=* ) root=${param#root=} ;;
rootdelay=* ) rootdelay=${param#rootdelay=} ;;
rootfstype=*) rootfstype=${param#rootfstype=} ;;
rootflags=* ) rootflags=${param#rootflags=} ;;
resume=* ) resume=${param#resume=} ;;
noresume ) noresume=true ;;
ro ) ro="ro" ;;
rw ) ro="rw" ;;
esac
done

# udevd location depends on version
if [ -x /sbin/udevd ]; then
UDEVD=/sbin/udevd
elif [ -x /lib/udev/udevd ]; then
UDEVD=/lib/udev/udevd
elif [ -x /lib/systemd/systemd-udevd ]; then
UDEVD=/lib/systemd/systemd-udevd
else
echo "Cannot find udevd nor systemd-udevd"
problem
fi

${UDEVD} --daemon --resolve-names=never
udevadm trigger
udevadm settle

if [ -f /etc/mdadm.conf ] ; then mdadm -As ; fi
if [ -x /sbin/vgchange ] ; then /sbin/vgchange -a y &gt; /dev/null ; fi
if [ -n "$rootdelay" ] ; then sleep "$rootdelay" ; fi

do_try_resume # This function will not return if resuming from disk
do_mount_root

killall -w ${UDEVD##*/}

exec switch_root /.root "$init" "$@"
</literal>
EOF</userinput>
<userinput>mkdir -p /usr/share/mkinitramfs &amp;&amp;
cat &gt; /usr/share/mkinitramfs/init.in &lt;&lt; "EOF"
<literal>#!/bin/sh

PATH=/usr/bin:/usr/sbin
export PATH

problem()
{
printf "Encountered a problem!\n\nDropping you to a shell.\n\n"
sh
}

no_device()
{
printf "The device %s, which is supposed to contain the\n" $1
printf "root file system, does not exist.\n"
printf "Please fix this problem and exit this shell.\n\n"
}

no_mount()
{
printf "Could not mount device %s\n" $1
printf "Sleeping forever. Please reboot and fix the kernel command line.\n\n"
printf "Maybe the device is formatted with an unsupported file system?\n\n"
printf "Or maybe filesystem type autodetection went wrong, in which case\n"
printf "you should add the rootfstype=... parameter to the kernel command line.\n\n"
printf "Available partitions:\n"
}

do_mount_root()
{
mkdir /.root
[ -n "$rootflags" ] &amp;&amp; rootflags="$rootflags,"
rootflags="$rootflags$ro"

case "$root" in
/dev/* ) device=$root ;;
UUID=* ) eval $root; device="/dev/disk/by-uuid/$UUID" ;;
PARTUUID=*) eval $root; device="/dev/disk/by-partuuid/$PARTUUID" ;;
LABEL=* ) eval $root; device="/dev/disk/by-label/$LABEL" ;;
"" ) echo "No root device specified." ; problem ;;
esac

while [ ! -b "$device" ] ; do
no_device $device
problem
done

if ! mount -n -t "$rootfstype" -o "$rootflags" "$device" /.root ; then
no_mount $device
cat /proc/partitions
while true ; do sleep 10000 ; done
else
echo "Successfully mounted device $root"
fi
}

do_try_resume()
{
case "$resume" in
UUID=* ) eval $resume; resume="/dev/disk/by-uuid/$UUID" ;;
LABEL=*) eval $resume; resume="/dev/disk/by-label/$LABEL" ;;
esac

if $noresume || ! [ -b "$resume" ]; then return; fi

ls -lH "$resume" | ( read x x x x maj min x
echo -n ${maj%,}:$min &gt; /sys/power/resume )
}

init=/sbin/init
root=
rootdelay=
rootfstype=auto
ro="ro"
rootflags=
device=
resume=
noresume=false

mount -n -t devtmpfs devtmpfs /dev
mount -n -t proc proc /proc
mount -n -t sysfs sysfs /sys
mount -n -t tmpfs tmpfs /run

read -r cmdline &lt; /proc/cmdline

for param in $cmdline ; do
case $param in
init=* ) init=${param#init=} ;;
root=* ) root=${param#root=} ;;
rootdelay=* ) rootdelay=${param#rootdelay=} ;;
rootfstype=*) rootfstype=${param#rootfstype=} ;;
rootflags=* ) rootflags=${param#rootflags=} ;;
resume=* ) resume=${param#resume=} ;;
noresume ) noresume=true ;;
ro ) ro="ro" ;;
rw ) ro="rw" ;;
esac
done

# udevd location depends on version
if [ -x /sbin/udevd ]; then
UDEVD=/sbin/udevd
elif [ -x /lib/udev/udevd ]; then
UDEVD=/lib/udev/udevd
elif [ -x /lib/systemd/systemd-udevd ]; then
UDEVD=/lib/systemd/systemd-udevd
else
echo "Cannot find udevd nor systemd-udevd"
problem
fi

${UDEVD} --daemon --resolve-names=never
udevadm trigger
udevadm settle

if [ -f /etc/mdadm.conf ] ; then mdadm -As ; fi
if [ -x /sbin/vgchange ] ; then /sbin/vgchange -a y &gt; /dev/null ; fi
if [ -n "$rootdelay" ] ; then sleep "$rootdelay" ; fi

do_try_resume # This function will not return if resuming from disk
do_mount_root

killall -w ${UDEVD##*/}

exec switch_root /.root "$init" "$@"
</literal>
EOF</userinput>
Beyond Linux From Scratch 12.2/postlfs_filesystems_initramfs — French
<userinput>mkdir -p /usr/share/mkinitramfs &amp;&amp;
cat &gt; /usr/share/mkinitramfs/init.in &lt;&lt; "EOF"
<literal>#!/bin/sh

PATH=/usr/bin:/usr/sbin
export PATH

problem()
{
printf "Encountered a problem!\n\nDropping you to a shell.\n\n"
sh
}

no_device()
{
printf "The device %s, which is supposed to contain the\n" $1
printf "root file system, does not exist.\n"
printf "Please fix this problem and exit this shell.\n\n"
}

no_mount()
{
printf "Could not mount device %s\n" $1
printf "Sleeping forever. Please reboot and fix the kernel command line.\n\n"
printf "Maybe the device is formatted with an unsupported file system?\n\n"
printf "Or maybe filesystem type autodetection went wrong, in which case\n"
printf "you should add the rootfstype=... parameter to the kernel command line.\n\n"
printf "Available partitions:\n"
}

do_mount_root()
{
mkdir /.root
[ -n "$rootflags" ] &amp;&amp; rootflags="$rootflags,"
rootflags="$rootflags$ro"

case "$root" in
/dev/* ) device=$root ;;
UUID=* ) eval $root; device="/dev/disk/by-uuid/$UUID" ;;
PARTUUID=*) eval $root; device="/dev/disk/by-partuuid/$PARTUUID" ;;
LABEL=* ) eval $root; device="/dev/disk/by-label/$LABEL" ;;
"" ) echo "No root device specified." ; problem ;;
esac

while [ ! -b "$device" ] ; do
no_device $device
problem
done

if ! mount -n -t "$rootfstype" -o "$rootflags" "$device" /.root ; then
no_mount $device
cat /proc/partitions
while true ; do sleep 10000 ; done
else
echo "Successfully mounted device $root"
fi
}

do_try_resume()
{
case "$resume" in
UUID=* ) eval $resume; resume="/dev/disk/by-uuid/$UUID" ;;
LABEL=*) eval $resume; resume="/dev/disk/by-label/$LABEL" ;;
esac

if $noresume || ! [ -b "$resume" ]; then return; fi

ls -lH "$resume" | ( read x x x x maj min x
echo -n ${maj%,}:$min &gt; /sys/power/resume )
}

init=/sbin/init
root=
rootdelay=
rootfstype=auto
ro="ro"
rootflags=
device=
resume=
noresume=false

mount -n -t devtmpfs devtmpfs /dev
mount -n -t proc proc /proc
mount -n -t sysfs sysfs /sys
mount -n -t tmpfs tmpfs /run

read -r cmdline &lt; /proc/cmdline

for param in $cmdline ; do
case $param in
init=* ) init=${param#init=} ;;
root=* ) root=${param#root=} ;;
rootdelay=* ) rootdelay=${param#rootdelay=} ;;
rootfstype=*) rootfstype=${param#rootfstype=} ;;
rootflags=* ) rootflags=${param#rootflags=} ;;
resume=* ) resume=${param#resume=} ;;
noresume ) noresume=true ;;
ro ) ro="ro" ;;
rw ) ro="rw" ;;
esac
done

# udevd location depends on version
if [ -x /sbin/udevd ]; then
UDEVD=/sbin/udevd
elif [ -x /lib/udev/udevd ]; then
UDEVD=/lib/udev/udevd
elif [ -x /lib/systemd/systemd-udevd ]; then
UDEVD=/lib/systemd/systemd-udevd
else
echo "Cannot find udevd nor systemd-udevd"
problem
fi

${UDEVD} --daemon --resolve-names=never
udevadm trigger
udevadm settle

if [ -f /etc/mdadm.conf ] ; then mdadm -As ; fi
if [ -x /sbin/vgchange ] ; then /sbin/vgchange -a y &gt; /dev/null ; fi
if [ -n "$rootdelay" ] ; then sleep "$rootdelay" ; fi

do_try_resume # This function will not return if resuming from disk
do_mount_root

killall -w ${UDEVD##*/}

exec switch_root /.root "$init" "$@"
</literal>
EOF</userinput>
<userinput>mkdir -p /usr/share/mkinitramfs &amp;&amp;
cat &gt; /usr/share/mkinitramfs/init.in &lt;&lt; "EOF"
<literal>#!/bin/sh

PATH=/usr/bin:/usr/sbin
export PATH

problem()
{
printf "Encountered a problem!\n\nDropping you to a shell.\n\n"
sh
}

no_device()
{
printf "The device %s, which is supposed to contain the\n" $1
printf "root file system, does not exist.\n"
printf "Please fix this problem and exit this shell.\n\n"
}

no_mount()
{
printf "Could not mount device %s\n" $1
printf "Sleeping forever. Please reboot and fix the kernel command line.\n\n"
printf "Maybe the device is formatted with an unsupported file system?\n\n"
printf "Or maybe filesystem type autodetection went wrong, in which case\n"
printf "you should add the rootfstype=... parameter to the kernel command line.\n\n"
printf "Available partitions:\n"
}

do_mount_root()
{
mkdir /.root
[ -n "$rootflags" ] &amp;&amp; rootflags="$rootflags,"
rootflags="$rootflags$ro"

case "$root" in
/dev/* ) device=$root ;;
UUID=* ) eval $root; device="/dev/disk/by-uuid/$UUID" ;;
PARTUUID=*) eval $root; device="/dev/disk/by-partuuid/$PARTUUID" ;;
LABEL=* ) eval $root; device="/dev/disk/by-label/$LABEL" ;;
"" ) echo "No root device specified." ; problem ;;
esac

while [ ! -b "$device" ] ; do
no_device $device
problem
done

if ! mount -n -t "$rootfstype" -o "$rootflags" "$device" /.root ; then
no_mount $device
cat /proc/partitions
while true ; do sleep 10000 ; done
else
echo "Successfully mounted device $root"
fi
}

do_try_resume()
{
case "$resume" in
UUID=* ) eval $resume; resume="/dev/disk/by-uuid/$UUID" ;;
LABEL=*) eval $resume; resume="/dev/disk/by-label/$LABEL" ;;
esac

if $noresume || ! [ -b "$resume" ]; then return; fi

ls -lH "$resume" | ( read x x x x maj min x
echo -n ${maj%,}:$min &gt; /sys/power/resume )
}

init=/sbin/init
root=
rootdelay=
rootfstype=auto
ro="ro"
rootflags=
device=
resume=
noresume=false

mount -n -t devtmpfs devtmpfs /dev
mount -n -t proc proc /proc
mount -n -t sysfs sysfs /sys
mount -n -t tmpfs tmpfs /run

read -r cmdline &lt; /proc/cmdline

for param in $cmdline ; do
case $param in
init=* ) init=${param#init=} ;;
root=* ) root=${param#root=} ;;
rootdelay=* ) rootdelay=${param#rootdelay=} ;;
rootfstype=*) rootfstype=${param#rootfstype=} ;;
rootflags=* ) rootflags=${param#rootflags=} ;;
resume=* ) resume=${param#resume=} ;;
noresume ) noresume=true ;;
ro ) ro="ro" ;;
rw ) ro="rw" ;;
esac
done

# udevd location depends on version
if [ -x /sbin/udevd ]; then
UDEVD=/sbin/udevd
elif [ -x /lib/udev/udevd ]; then
UDEVD=/lib/udev/udevd
elif [ -x /lib/systemd/systemd-udevd ]; then
UDEVD=/lib/systemd/systemd-udevd
else
echo "Cannot find udevd nor systemd-udevd"
problem
fi

${UDEVD} --daemon --resolve-names=never
udevadm trigger
udevadm settle

if [ -f /etc/mdadm.conf ] ; then mdadm -As ; fi
if [ -x /sbin/vgchange ] ; then /sbin/vgchange -a y &gt; /dev/null ; fi
if [ -n "$rootdelay" ] ; then sleep "$rootdelay" ; fi

do_try_resume # This function will not return if resuming from disk
do_mount_root

killall -w ${UDEVD##*/}

exec switch_root /.root "$init" "$@"
</literal>
EOF</userinput>