util-linux (2.39)
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VersionsSWITCH_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
Print version and exit.
EXIT STATUS
switch_root returns 1 on failure, it never returns on success.
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
[34mPeter Jones <pjones@redhat.com>, [34mJeremy Katz <katzj@redhat.com>, [34mKarel Zak <kzak@redhat.com>
SEE ALSO
chroot(2), init(8), mkinitrd(8), mount(8)
REPORTING BUGS
For bug reports, use the issue tracker at [34mhttps://github.com/util-linux/util-linux/issues.
AVAILABILITY
The switch_root command is part of the util-linux package which can be downloaded from [34mLinux Kernel Archive
<https://www.kernel.org/pub/linux/utils/util-linux/>.
util-linux 2.39 2023-03-23 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
Print version and exit.
EXIT STATUS
switch_root returns 1 on failure, it never returns on success.
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
[34mPeter Jones <pjones@redhat.com>, [34mJeremy Katz <katzj@redhat.com>, [34mKarel Zak <kzak@redhat.com>
SEE ALSO
chroot(2), init(8), mkinitrd(8), mount(8)
REPORTING BUGS
For bug reports, use the issue tracker at [34mhttps://github.com/util-linux/util-linux/issues.
AVAILABILITY
The switch_root command is part of the util-linux package which can be downloaded from [34mLinux Kernel Archive
<https://www.kernel.org/pub/linux/utils/util-linux/>.
util-linux 2.39 2023-03-23 SWITCH_ROOT(8)