The "initial RAM file system" is the successor of initrd. It is a root filesystem that is embedded into the kernel and loaded early in the boot process.
Questions tagged [initramfs]
476 questions
6
votes
1 answer
Adding dropbear to initramfs with dracut on Fedora
I'm trying to add dropbear to my initramfs so I can unlock the encrypted disk through a remote SSH session (as described here). I'm running Fedora 16 which apparently uses dracut to generate the initramfs image. Can anyone explain (or provide a…
brianmearns
- 674
6
votes
3 answers
How do I determine if my kernel uses initramfs?
I'm reading up on Wake on Lan on Debian wiki and there is a part that says:
If your kernel uses an initramfs image (eg. Debian stock kernels), also run update-initramfs -u (or update-initramfs -u -k all if necessary) to rebuild kernel initial…
linstar
- 753
3
votes
1 answer
initramfs.cpio location
So I'm trying to build a basic initramfs using this tutorial on Ubuntu 14.04.5 LTS, and the last step "External file list" is throwing me off. I created the initramfs.cpio file from initramfs.list and placed it in my kernel build directory. After…
3
votes
2 answers
Understanding a simple configuration file for initramfs
Can somebody explain me what is happening in the following?
# This is a very simple, default initramfs
dir /dev 0755 0 0
nod /dev/console 0600 0 0 c 5 1
nod /dev/tty 0666 0 0 c 5 0
nod /dev/null 0600 0 0 c 1 3
nod /dev/mem 0600…
user2799508
- 1,712
1
vote
1 answer
how to trigger intentionally to rebuild initramfs and vmlinuz
I was learning to use debootstrap and forgot to include some modules when initramfs was rebuild. Later I copied over what was missing, but the missed files were not included when the system was rebooted - only after some more additions (with apt…
user855443
- 135
1
vote
1 answer
Cannot recover from initramfs: File or directory not found when manually mounting root device
When not specifying linux /vmlinuz root=/dev/sdb1 correctly in the grub shell, I get dropped to the initramfs shell. Instead of rebooting, I would like to continue boot process from there.
As explained here, I want to do:
mount /dev/sdb1…
Multisync
- 474
1
vote
0 answers
Kiwi produces huge initramfs
I'm using Kiwi to build a boot CD based on OpenSUSE 13.1. I want the disk ISO image to be as tiny as possible. I managed to get the read-only filesystem down to only 100MB, but for reasons unknown, the initrd file is 80MB on its own. (!!)
Is there…
MathematicalOrchid
- 5,934
0
votes
1 answer
copy_exec command not found when executing update-initramfs
I'm currently trying to include cryptsetup into my initramfs so i can boot after having encrypted the root partition.
I created a hook-script in /usr/share/initramfs-tools/hooks/my_hook
With the following content
copy_exec /sbin/cryptsetup…
KoKlA
- 101
- 2