NAME
update-initramfs - generate an initramfs image
SYNOPSIS
update-initramfs -c|-d|-u [-k version] [-t] [-v] [-b] [-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
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
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 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 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 <maks@debian.org>,
Jeff Bailey <jbailey@raspberryginger.com> and numerous others.
SEE ALSO
initramfs.conf(5), initramfs-tools(8), mkinitramfs(8).