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| author | Thomas Horsley <tom.horsley@ccur.com> | 2006-07-30 03:04:12 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-07-31 13:28:44 -0700 |
| commit | 0a5eca6530eb4d0120981936058537c24a2f92ce (patch) | |
| tree | 0e9d49c3dbaa646f578d9fb0c83a179b5775b1a3 /Documentation/initrd.txt | |
| parent | 5a06a363ef48444186f18095ae1b932dddbbfa89 (diff) | |
| download | lwn-0a5eca6530eb4d0120981936058537c24a2f92ce.tar.gz lwn-0a5eca6530eb4d0120981936058537c24a2f92ce.zip | |
[PATCH] documentation: Documentation/initrd.txt
I spent a long time the other day trying to examine an initrd image on a
fedora core 5 system because the initrd.txt file is apparently obsolete.
Here is a patch which I hope will reduce future confusion for others.
Signed-off-by: Thomas Horsley <tom.horsley@ccur.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'Documentation/initrd.txt')
| -rw-r--r-- | Documentation/initrd.txt | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/Documentation/initrd.txt b/Documentation/initrd.txt index b1b6440237a6..15f1b35deb34 100644 --- a/Documentation/initrd.txt +++ b/Documentation/initrd.txt @@ -72,6 +72,22 @@ initrd adds the following new options: initrd is mounted as root, and the normal boot procedure is followed, with the RAM disk still mounted as root. +Compressed cpio images +---------------------- + +Recent kernels have support for populating a ramdisk from a compressed cpio +archive, on such systems, the creation of a ramdisk image doesn't need to +involve special block devices or loopbacks, you merely create a directory on +disk with the desired initrd content, cd to that directory, and run (as an +example): + +find . | cpio --quiet -c -o | gzip -9 -n > /boot/imagefile.img + +Examining the contents of an existing image file is just as simple: + +mkdir /tmp/imagefile +cd /tmp/imagefile +gzip -cd /boot/imagefile.img | cpio -imd --quiet Installation ------------ |