change initramfs by hand? Post: 302268532

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Operating Systems Linux Debian change initramfs by hand? Post 302268532 by frankie06 on Monday 15th of December 2008 08:30:25 PM

12-15-2008

Registered User

Thanks for the help otheus. I appreciate.

Quote:

Originally Posted by otheus

The method I described works as of Linux 2.6.13 (or before FC3) If you are using an older version (uname -k) perhaps you have to create a filesystem.

I have kernel 2.6.26.

The ibm web page (initrd overview) is really well made, but it's partially obsolete (as they say themselves: "up to FC3"; it's also 2.5 years old).

I tried the code you suggested anyway; every step of the initrd creation process works well, but the system won't boot. With both methods (this and the one you suggested earlier) I get the following error during boot:

Code:

RAMDISK: Compressed image found at block 0
RAMDISK: incomplete write (-28 != 32768) 8388608
List of all partitions:
No filesystem could mount root, tried:
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)

Which is probably an improvement over the previous error message which I got before posting here for the first time:

Code:

Failed to execute /init
Kernel panic - not syncing: No init found. Try passing init= option to kernel.

So I guess I'm closer, but not there yet...

frankie06

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mkinitrd

MKINITRD(8)							      dracut							       MKINITRD(8)

NAME

       mkinitrd - is a compat wrapper, which calls dracut to generate an initramfs

SYNOPSIS

       mkinitrd [OPTION...] [<initrd-image>] <kernel-version>

DESCRIPTION

       mkinitrd creates an initramfs image <initrd-image> for the kernel with version <kernel-version> by calling "dracut".

	   Important
	   If a more fine grained control over the resulting image is needed, "dracut" should be called directly.

OPTIONS

       --version
	   print info about the version

       -v, --verbose
	   increase verbosity level

       -f, --force
	   overwrite existing initramfs file.

       *--image-version
	   append the kernel version to the target image <initrd-image>-<kernel-version>.

       --with=<module>
	   add the kernel module <module> to the initramfs.

       --preload=<module>
	   preload the kernel module <module> in the initramfs before any other kernel modules are loaded. This can be used to ensure a certain
	   device naming, which should in theory be avoided and the use of symbolic links in /dev is encouraged.

       --nocompress
	   do not compress the resulting image.

       --help
	   print a help message and exit.

AVAILABILITY

       The mkinitrd command is part of the dracut package and is available from https://dracut.wiki.kernel.org

AUTHORS

       Harald Hoyer

SEE ALSO

       dracut(8)

dracut								    06/12/2014							       MKINITRD(8)