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SWITCH_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

Display help text and exit.
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/.







  

    June 2009
    util-linux