# switch_root(8) - man - phpman

> **TLDR:** Use a different filesystem as the root of the mount tree.
>
- Move `/proc`, `/dev`, `/sys`, and `/run` to the specified filesystem, use this filesystem as the new root and start the specified init process:
  `switch_root {{new_root}} {{/sbin/init}}`
- Display help:
  `switch_root {{-h|--help}}`

*Source: tldr-pages*

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[SWITCH_ROOT(8)](https://www.chedong.com/phpMan.php/man/SWITCHROOT/8/markdown)                          System Administration                         [SWITCH_ROOT(8)](https://www.chedong.com/phpMan.php/man/SWITCHROOT/8/markdown)



## 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.

## EXIT STATUS
       **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

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

## SEE ALSO
       [**chroot**(2)](https://www.chedong.com/phpMan.php/man/chroot/2/markdown), [**init**(8)](https://www.chedong.com/phpMan.php/man/init/8/markdown), [**mkinitrd**(8)](https://www.chedong.com/phpMan.php/man/mkinitrd/8/markdown), [**mount**(8)](https://www.chedong.com/phpMan.php/man/mount/8/markdown)

## REPORTING BUGS
       For bug reports, use the issue tracker at <https://github.com/karelzak/util-linux/issues>.

## AVAILABILITY
       The **switch**___**root** command is part of the util-linux package which can be downloaded from Linux
       Kernel Archive <<https://www.kernel.org/pub/linux/utils/util-linux/>>.



util-linux 2.37.2                            2021-06-02                               [SWITCH_ROOT(8)](https://www.chedong.com/phpMan.php/man/SWITCHROOT/8/markdown)