update-initramfs

update-initramfs - generate an initramfs image

Beschreibung

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

Installation

initramfs-tools

Aufruf

update-initramfs {-c|-d|-u} [-k version] [-v] [-b directory]
update-initramfs -h

Optionen

Unix	GNU	Parameter	Beschreibung
-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	Set an different bootdir for the image creation
-h	--help		Print a short help page describing the available options in update-initramfs

Anwendung

Beispiele

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

Konfiguration

Dateien

Datei	Beschreibung
/etc/initramfs-tools/update-initramfs.conf

Anhang

Siehe auch

• Update-initramfs/EN

1. initramfs.conf(5)
2. initramfs-tools(7)
3. mkinitramfs(8)
4. lsinitramfs(8)

Dokumentation

Man-Page

1. UPDATE-INITRAMFS(8)

Info-Pages