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SWITCH_ROOT
Section: System Administration (8)Updated: June 2009
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NAME
switch_root - switch to another filesystem as the root of the mount treeSYNOPSIS
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/.