SWITCH_ROOT
Section: System Administration (8)
Updated: June 2009
Page Index
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),
init(8),
mkinitrd(8),
mount(8)
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/.