SWITCH_ROOT(8) - phpMan

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, /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 AT redhat.com>, Jeremy Katz <katzj AT redhat.com>, Karel Zak
       <kzak AT redhat.com>

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

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)

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