SWITCH_ROOT(8)              System Administration             SWITCH_ROOT(8)

NAME         top

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

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

       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 <>
       Jeremy Katz <>
       Karel Zak <>

AVAILABILITY         top

       The switch_root command is part of the util-linux package and is
       available from

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 
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util-linux                        June 2009                   SWITCH_ROOT(8)