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
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/>.