96 lines
2.2 KiB
Groff
96 lines
2.2 KiB
Groff
.TH UPDATE-INITRAMFS 8 "2014/10/16" "initramfs\-tools" "System Administration"
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.SH NAME
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update\-initramfs \- generate an initramfs image
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.SH SYNOPSIS
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.B update\-initramfs
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.RB { \-c | \-d | \-u }
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.RB [ \-k
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.IR version ]
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.RB [ \-v ]
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.RB [ \-b
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.IR directory ]
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.br
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.BR update\-initramfs " " \-h
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.SH DESCRIPTION
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The
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.B update\-initramfs
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script manages your initramfs images on your local box.
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It keeps track of the existing initramfs archives in /boot.
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There are three modes of operation create, update or delete.
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You must at least specify one of those modes.
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The initramfs is a gzipped cpio archive.
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At boot time, the kernel unpacks that archive into RAM disk, mounts and
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uses it as initial root file system. All finding of the root device
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happens in this early userspace.
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.SH OPTIONS
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.TP
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\fB\-k \fI version
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Set the specific kernel version for whom the initramfs will be generated.
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For example the output of uname \-r for your currently running kernel.
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This argument is optional for update. The default is the latest kernel version.
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The use of "all" for the
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.I version
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string specifies that
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.B update\-initramfs
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should operate on all installed kernel versions (with \fB\-c\fR), or
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on all installed kernel versions that already have an initramfs
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(with \fB\-d\fR or \fB\-u\fR).
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.TP
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\fB\-c
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This mode creates a new initramfs.
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.TP
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\fB\-u
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This mode updates an existing initramfs.
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.TP
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\fB\-d
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This mode deletes an existing initramfs.
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.TP
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\fB\-v
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This option increases the amount of information you are given during
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the chosen action.
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.TP
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\fB\-b \fI directory
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Set an different bootdir for the image creation.
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.TP
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\fB\-h\fR, \fB--help\fR
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Print a short help page describing the available options in
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.B update\-initramfs.
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.SH EXAMPLES
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Update the initramfs of the newest kernel:
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.PP
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.B update\-initramfs -u
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Create the initramfs for a specific kernel:
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.PP
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.B update\-initramfs -c -k 2.6.18-1-686
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.SH FILES
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/etc/initramfs-tools/update-initramfs.conf
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.SH AUTHOR
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The initramfs-tools are written by Maximilian Attems <maks@debian.org>,
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Jeff Bailey <jbailey@raspberryginger.com> and numerous others.
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.SH SEE ALSO
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.BR
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.IR initramfs.conf (5),
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.IR initramfs-tools (7),
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.IR mkinitramfs (8),
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.IR lsinitramfs (8).
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