switch_root(8) - Linux man page
Name
switch_root - switch to another filesystem as the root of the mount tree.Synopsis
switch_root [-hV]switch_root newroot init [arg...]
Description
switch_root moves already mounted /proc, /dev and /sys 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.
Options
- -h, --help
- show help and exit
- -V, --version
- show version number and exit
Return Value
switch_root returns 0 on success and 1 on failure.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
See Also
mount(8) chroot(2) init(8) mkinitrd(8)Authors
Peter Jones <pjones@redhat.com> Jeremy Katz <katzj@redhat.com> Karel Zak <kzak@redhat.com>