Poster of Linux kernelThe best gift for a Linux geek
SWITCH_ROOT

SWITCH_ROOT

Section: Maintenance Commands (8) Updated: June 2009
Local index Up
 

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 and /sys 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
show help and exit
-V, --version
show version number 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

mount(8) chroot(2) init(8) mkinitrd(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-ng package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux-ng/.


 

Index

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
RETURN VALUE
NOTES
SEE ALSO
AUTHORS
AVAILABILITY

This document was created by man2html, using the manual pages.
Time: 22:02:28 GMT, April 16, 2011