script generates an initramfs image.
The initramfs is a compressed cpio archive. The archive can be used on a
different box of the same arch with the corresponding Linux kernel.
is meant for advanced usage. On your local box
with the relevant parameters.
keeps sha1sum of generated initramfs. It takes care to generate backups
and eventually runs the bootloader.
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.
Set an alternate configuration directory.
Keep the temporary directory used to make the image.
Write the image to
Set the verbose mode output.
Set the kernel version of the initramfs image
(defaults to the running kernel).
This option queries if mkinitramfs can create ramdisks on a running kernel of version
This option queries if mkinitramfs can create ramdisks for kernel version
environment variable. If set, it uses subdirectories in the given
directory to create its temporary working directories. Else it uses
as default value for that purpose. The given directory should be on a
filesystem which allows the execution of files stored there, i.e.
should not be mounted with the
The default configuration file for the script. See
for a description of the available configuration parameter.
Specified modules will be put in the generated image and loaded when the system boots. The format - one per line - is identical to that of
which is described in
The conf.d directory allows to hardcode bootargs at initramfs build time
via config snippets. This allows to set ROOT or RESUME.
This is especially useful for bootloaders, which do not pass an root bootarg.
If this file exists, it will be appended to the initramfs in a way that causes
it to be loaded by ACPI.
Create an initramfs for current running kernel:
mkinitramfs -o ~/tmp/initramfs-$(uname -r)
Create an initramfs for specific kernel and keep builddirs: