SWITCH_ROOT - Online Linux Manual PageSection : 8
Updated : 2022-08-02
Source : util−linux 2.38.1
Note : System Administration
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NAMEswitch_root − switch to another filesystem as the root of the mount tree

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SYNOPSISswitch_root [−hV] switch_root newroot init [arg...]

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DESCRIPTIONswitch_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.

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OPTIONS−h, −−help Display help text and exit. −V, −−version Print version and exit.

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EXIT STATUSswitch_root returns 1 on failure, it never returns on success.

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NOTESswitch_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: .fam C mount −−bind $DIR $DIR .fam

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AUTHORSPeter Jones <pjones@redhat.com>, Jeremy Katz <katzj@redhat.com>, Karel Zak <kzak@redhat.com>

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SEE ALSOchroot(2), init(8), mkinitrd(8), mount(8)

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REPORTING BUGSFor bug reports, use the issue tracker at <https://github.com/util−linux/util−linux/issues>.

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AVAILABILITYThe switch_root command is part of the util−linux package which can be downloaded from Linux Kernel Archive <https://www.kernel.org/pub/linux/utils/util−linux/>. 0

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