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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 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 AT redhat.com>
       Jeremy Katz <katzj AT redhat.com>
       Karel Zak <kzak AT redhat.com>
AVAILABILITY
       The switch_root command is part of the util-linux package and is avail-
       able from ftp://ftp.kernel.org/pub/linux/utils/util-linux/.

util-linux                         June 2009                    SWITCH_ROOT(8)