Package: initramfs-tools
Version: 0.117
File: /usr/share/man/man8/initramfs-tools.8.gz
We read
DEBUG
It is easy to check the generated initramfs for its content. One may
need to double-check if it contains the relevant binaries, libs or mod-
ules:
mkdir tmp/initramfs
cd tmp/initramfs
gunzip -c /boot/initrd.img-2.6.18-1-686 | \
cpio -i -d -H newc --no-absolute-filenames
However these days this will merely get the user:
gzip: /boot/initrd.img-3.16-2-686-pae: not in gzip format
cpio: premature end of file
These days
$ file initrd.img-3.16-*
initrd.img-3.16-2-686-pae: ASCII cpio archive (SVR4 with no CRC)
$ cpio -tF initrd.img-3.16-2-686-pae
kernel
kernel/x86
kernel/x86/microcode
kernel/x86/microcode/GenuineIntel.bin
6 blocks
Noting the 6 blocks, I then did
set -uxe
cd /
mkdir -p tmp/initramfs
cd tmp/initramfs
dd if=/boot/initrd.img-3.16-2-686-pae skip=6|zcat|
cpio -vi -d -H newc --no-absolute-filenames
which worked.
So the man page needs to be updated.
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