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SWITCH_ROOT(8)									   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@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
       ftp://ftp.kernel.org/pub/linux/utils/util-linux/.

Linux					    June 2009				   SWITCH_ROOT(8)
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