UPDATE-INITRAMFS(8)       (2014/10/16)        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 cre-
          ate, 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 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 operate on all installed kernel
               versions (with -c), or on all installed kernel versions
               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 action.

          -b  directory

     Page 1                   initramfs-tools        (printed 5/24/22)

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

               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@debian.org>, Jeff Bailey <jbailey@raspberryginger.com>
          and numerous others.

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

     Page 2                   initramfs-tools        (printed 5/24/22)