switch_root − switch to another filesystem as the root of the mount tree
switch_root [−hV]
switch_root newroot init [arg...]
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.
−h, −−help
Display help text and exit.
−V, −−version
Print version and exit.
switch_root returns 1 on failure, it never returns on success.
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
Peter Jones <[email protected]>, Jeremy Katz <[email protected]>, Karel Zak <[email protected]>
chroot(2), init(8), mkinitrd(8), mount(8)
For bug reports, use the issue tracker at <https://github.com/util−linux/util−linux/issues>.
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/>.