update-initramfs(8) - generate an initramfs image

[amurleopard]

UPDATE-INITRAMFS(8)	    update-initramfs manual	   UPDATE-INITRAMFS(8)

NAME
       update-initramfs - generate an initramfs image

SYNOPSIS
       update-initramfs -c|-d|-u [-k version] [-t] [-v] [-b directory] [-h]

DESCRIPTION
       The update-initramfs script manages your initramfs images on your local
       box.  It keeps track of	the  existing  initramfs  archives  in	/boot.
       There  are three modes of operation create, update or delete.  You must
       at least specify one of those modes.

       The initramfs is a gzipped cpio archive.   At  boot  time,  the	kernel
       unpacks	that archive into RAM disk, mounts and uses it as initial root
       file system. All finding of the	root  device  happens  in  this  early
       userspace.

OPTIONS
	-k  version
	      Set  the	specific kernel version for whom the initramfs will be
	      generated.  For example the output of uname  -r  for  your  cur‐
	      rently  running  kernel.	 This argument is optional for update.
	      The default is the latest kernel version.

	      The  use	 of   "all"   for   the   version   string   specifies
	      update-initramfs	to  execute  the  chosen action for all kernel
	      versions, that are already known to update-initramfs.

	-c    This mode creates a new initramfs.

	-u    This mode updates an existing initramfs.

	-d    This mode removes an existing initramfs.

	-t    Allows one to take over an custom initramfs with a newer one.

	-v    This option increases the amount of information  you  are  given
	      during the chosen action.

	-b  directory
	      Set an different bootdir for the image creation.

	-h    Print  a	short  help  page  describing the available options in
	      update-initramfs.

EXAMPLES
       Update the initramfs of the newest kernel:

       update-initramfs -u

       Create the initramfs for a specific kernel:

       update-initramfs -c -k 2.6.18-1-686

FILES
       /etc/initramfs-tools/update-initramfs.conf

AUTHOR
       The initramfs-tools are written by Maximilian Attems <[email protected]>,
       Jeff Bailey <[email protected]> and numerous others.

SEE ALSO
	initramfs.conf(5), initramfs-tools(8), mkinitramfs(8), lsinitramfs(8).

Linux				  2008/12/19		   UPDATE-INITRAMFS(8)