NAME | SYNOPSIS | DESCRIPTION | OPTIONS | RETURN VALUE | NOTES | SEE ALSO | AUTHORS | AVAILABILITY | COLOPHON

SWITCH_ROOT(8)              System Administration             SWITCH_ROOT(8)

NAME         top

       switch_root  -  switch to another filesystem as the root of the mount
       tree

SYNOPSIS         top

       switch_root [-hV]

       switch_root newroot init [arg...]

DESCRIPTION         top

       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         top

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

       -V, --version
              Display version information and exit.

RETURN VALUE         top

       switch_root returns 0 on success and 1 on failure.

NOTES         top

       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         top

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

AUTHORS         top

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

AVAILABILITY         top

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

COLOPHON         top

       This page is part of the util-linux (a random collection of Linux
       utilities) project.  Information about the project can be found at 
       ⟨https://www.kernel.org/pub/linux/utils/util-linux/⟩.  If you have a
       bug report for this manual page, send it to
       util-linux@vger.kernel.org.  This page was obtained from the
       project's upstream Git repository 
       ⟨git://git.kernel.org/pub/scm/utils/util-linux/util-linux.git⟩ on
       2016-12-10.  If you discover any rendering problems in this HTML ver‐
       sion of the page, or you believe there is a better or more up-to-date
       source for the page, or you have corrections or improvements to the
       information in this COLOPHON (which is not part of the original man‐
       ual page), send a mail to man-pages@man7.org

util-linux                        June 2009                   SWITCH_ROOT(8)