switch_root

(8)

switch to another filesystem as the root of the mount tree

Administration and privileged commands 2 optionsutil-linux 2.41-5

switch_root [-hV] switch_root newroot init [arg...]

Options

-h--help

Display help text and exit.

-V--version

Display version and exit.

DESCRIPTION

switch_root moves already mounted /proc, /dev, /sys and /run to newroot and makes newroot the new root filesystem and starts init process.

WARNING: switch_root removes recursively all files and directories on the current root filesystem.

EXIT STATUS

switch_root returns 1 on failure, it never returns on success.

NOTES

switch_root will fail to function if newroot is not the root of a mount. If you want to switch root into a directory that does not meet this requirement then you can first use a bind-mounting trick to turn any directory into a mount point:

mount --bind $DIR $DIR

AUTHORS

Peter Jones pjones@redhat.com, Jeremy Katz katzj@redhat.com, Karel Zak kzak@redhat.com

REPORTING BUGS

For bug reports, use the issue tracker https://github.com/util-linux/util-linux/issues.

AVAILABILITY

The switch_root command is part of the util-linux package which can be downloaded from Linux Kernel Archive https://www.kernel.org/pub/linux/utils/util-linux/.