SWITCH_ROOT(8)               System Administration              SWITCH_ROOT(8)

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, /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.

OPTIONS
       -h, --help
           Display help text and exit.

       -V, --version
           Print version and exit.

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>

SEE ALSO
       chroot(2), init(8), mkinitrd(8), mount(8)

REPORTING BUGS
       For bug reports, use the issue tracker at
       <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/>.

util-linux 2.40                   2024-04-06                    SWITCH_ROOT(8)