Linux 2.6 - man page for switch_root (linux section 8)
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switch_root - switch to another filesystem as the root of the mount tree.
switch_root newroot init [arg...]
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
show help and exit
show version number and exit
switch_root returns 0 on success and 1 on failure.
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
mount(8) chroot(2) init(8) mkinitrd(8)
Peter Jones <firstname.lastname@example.org>
Jeremy Katz <email@example.com>
Karel Zak <firstname.lastname@example.org>
The switch_root command is part of the util-linux package and is available from
Linux June 2009 SWITCH_ROOT(8)
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