62 lines
1.3 KiB
Groff
62 lines
1.3 KiB
Groff
.\" Karel Zak <kzak@redhat.com>
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.TH SWITCH_ROOT 8 "June 2009" "util-linux" "System Administration"
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.SH NAME
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switch_root \- switch to another filesystem as the root of the mount tree
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.SH SYNOPSIS
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.B switch_root
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.RB [ \-hV ]
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.LP
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.B switch_root
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.I newroot
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.I init
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.RI [ arg ...]
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.SH DESCRIPTION
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.B switch_root
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moves already mounted /proc, /dev and /sys to
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.I newroot
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and makes
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.I newroot
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the new root filesystem and starts
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.I init
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process.
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.B WARNING: switch_root removes recursively all files and directories on the current root filesystem.
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.SH OPTIONS
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.IP "\fB\-h, \-\-help\fP"
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Display help text and exit.
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.IP "\fB\-V, \-\-version\fP"
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Display version information and exit.
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.SH RETURN VALUE
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.B switch_root
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returns 0 on success and 1 on failure.
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.SH NOTES
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switch_root will fail to function if
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.B newroot
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is not the root of a mount. If you want to switch root into a directory that
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does not meet this requirement then you can first use a bind-mounting trick to
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turn any directory into a mount point:
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.sp
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.nf
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.RS
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mount --bind $DIR $DIR
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.RE
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.fi
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.SH "SEE ALSO"
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.BR mount (8),
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.BR chroot (2),
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.BR init (8),
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.BR mkinitrd (8)
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.SH AUTHORS
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.nf
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Peter Jones <pjones@redhat.com>
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Jeremy Katz <katzj@redhat.com>
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Karel Zak <kzak@redhat.com>
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.fi
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.SH AVAILABILITY
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The switch_root command is part of the util-linux package and is available from
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ftp://ftp.kernel.org/pub/linux/utils/util-linux/.
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