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
              Display version information 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

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

AUTHORS

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

AVAILABILITY

       The  switch_root  command  is  part  of  the  util-linux  package  and  is  available from
       https://www.kernel.org/pub/linux/utils/util-linux/.