update-initramfs(8) - phpMan

UPDATE-INITRAMFS(8)                   System Administration                   UPDATE-INITRAMFS(8)

NAME
       update-initramfs - generate an initramfs image

SYNOPSIS
       update-initramfs {-c|-d|-u} [-k version] [-v] [-b directory]
       update-initramfs -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 de-
       vice happens in this early userspace.

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

              The  use of "all" for the version string specifies that update-initramfs should op-
              erate on all installed kernel versions (with -c), or on all installed  kernel  ver-
              sions that already have an initramfs (with -d or -u).

       -c     This mode creates a new initramfs.

       -u     This mode updates an existing initramfs.

       -d     This mode deletes an existing initramfs.

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

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

       -h, --help
              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 <maks AT debian.org>, Jeff Bailey <jbai-
       ley AT raspberryginger.com> and numerous others.

SEE ALSO
        initramfs.conf(5), initramfs-tools(7), mkinitramfs(8), lsinitramfs(8).

initramfs-tools                             2014/10/16                        UPDATE-INITRAMFS(8)

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