bionic (8) switch_root.8.gz

Provided by: util-linux_2.31.1-0.4ubuntu3.7_amd64 bug

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.

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

       chroot(2), init(8), mkinitrd(8), mount(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
       https://www.kernel.org/pub/linux/utils/util-linux/.