Bug #762 » disklabel64.8.patch
| disklabel64.8 9 Aug 2007 11:48:51 -0000 | ||
|---|---|---|
|
.\" $DragonFly: src/sbin/disklabel64/disklabel64.8,v 1.2 2007/08/08 11:21:08 swildner Exp $
|
||
|
.\"
|
||
|
.Dd January 21, 2007
|
||
|
.Dt DISKLABEL 8
|
||
|
.Dt DISKLABEL64 8
|
||
|
.Os
|
||
|
.Sh NAME
|
||
|
.Nm disklabel
|
||
|
.Nm disklabel64
|
||
|
.Nd read and write disk pack label
|
||
|
.Sh SYNOPSIS
|
||
|
.Nm
|
||
| ... | ... | |
|
indicates that the partition does not begin or end exactly on a
|
||
|
cylinder boundary.
|
||
|
.Sh EXAMPLES
|
||
|
.Dl "disklabel da0s1"
|
||
|
.Dl "disklabel64 da0s1"
|
||
|
.Pp
|
||
|
Display the in-core label for the first slice of the
|
||
|
.Pa da0
|
||
| ... | ... | |
|
the base disk name should be specified, such as
|
||
|
.Pa da0 . )
|
||
|
.Pp
|
||
|
.Dl "disklabel da0s1 > savedlabel"
|
||
|
.Dl "disklabel64 da0s1 > savedlabel"
|
||
|
.Pp
|
||
|
Save the in-core label for
|
||
|
.Pa da0s1
|
||
| ... | ... | |
|
.Fl R
|
||
|
option to restore the label at a later date.
|
||
|
.Pp
|
||
|
.Dl "disklabel -w -r /dev/da0s1 da2212 foo"
|
||
|
.Dl "disklabel64 -w -r /dev/da0s1 da2212 foo"
|
||
|
.Pp
|
||
|
Create a label for
|
||
|
.Pa da0s1
|
||
| ... | ... | |
|
Any existing bootstrap code will be clobbered
|
||
|
and the disk rendered unbootable.
|
||
|
.Pp
|
||
|
.Dl "disklabel -e -r da0s1"
|
||
|
.Dl "disklabel64 -e -r da0s1"
|
||
|
.Pp
|
||
|
Read the on-disk label for
|
||
|
.Pa da0s1 ,
|
||
|
edit it, and reinstall in-core as well as on-disk.
|
||
|
Existing bootstrap code is unaffected.
|
||
|
.Pp
|
||
|
.Dl "disklabel -e -r -n da0s1"
|
||
|
.Dl "disklabel64 -e -r -n da0s1"
|
||
|
.Pp
|
||
|
Read the on-disk label for
|
||
|
.Pa da0s1 ,
|
||
| ... | ... | |
|
.Em not
|
||
|
install the new label either in-core or on-disk.
|
||
|
.Pp
|
||
|
.Dl "disklabel -r -w da0s1 auto"
|
||
|
.Dl "disklabel64 -r -w da0s1 auto"
|
||
|
.Pp
|
||
|
Try to auto-detect the required information from
|
||
|
.Pa da0s1 ,
|
||
| ... | ... | |
|
command to edit the
|
||
|
partitioning and file system information.
|
||
|
.Pp
|
||
|
.Dl "disklabel -R da0s1 savedlabel"
|
||
|
.Dl "disklabel64 -R da0s1 savedlabel"
|
||
|
.Pp
|
||
|
Restore the on-disk and in-core label for
|
||
|
.Pa da0s1
|
||
| ... | ... | |
|
.Pa savedlabel .
|
||
|
Existing bootstrap code is unaffected.
|
||
|
.Pp
|
||
|
.Dl "disklabel -R -n da0s1 label_layout"
|
||
|
.Dl "disklabel64 -R -n da0s1 label_layout"
|
||
|
.Pp
|
||
|
Display what the label would be for
|
||
|
.Pa da0s1
|
||
| ... | ... | |
|
.Cm *
|
||
|
partition sizes.
|
||
|
.Pp
|
||
|
.Dl disklabel -B da0s1
|
||
|
.Dl disklabel64 -B da0s1
|
||
|
.Pp
|
||
|
Install a new bootstrap on
|
||
|
.Pa da0s1 .
|
||
| ... | ... | |
|
.Pa /boot/boot2 .
|
||
|
On-disk and in-core labels are unchanged.
|
||
|
.Pp
|
||
|
.Dl disklabel -w -B /dev/da0s1 -b newboot1 -s newboot2 da2212
|
||
|
.Dl disklabel64 -w -B /dev/da0s1 -b newboot1 -s newboot2 da2212
|
||
|
.Pp
|
||
|
Install a new label and bootstrap.
|
||
|
The label is derived from disktab information for
|
||
| ... | ... | |
|
.Dl dd if=/dev/zero of=/dev/da0 bs=512 count=32
|
||
|
.Dl fdisk -BI da0
|
||
|
.Dl dd if=/dev/zero of=/dev/da0s1 bs=512 count=32
|
||
|
.Dl disklabel -w -B da0s1 auto
|
||
|
.Dl disklabel -e da0s1
|
||
|
.Dl disklabel64 -w -B da0s1 auto
|
||
|
.Dl disklabel64 -e da0s1
|
||
|
.Pp
|
||
|
Completely wipe any prior information on the disk, creating a new bootable
|
||
|
disk with a DOS partition table containing one
|
||
| ... | ... | |
|
.Cm * ,
|
||
|
which could be used as a source file for
|
||
|
.Pp
|
||
|
.Dl disklabel -R ad0s1c new_label_file
|
||
|
.Dl disklabel64 -R ad0s1c new_label_file
|
||
|
.Bd -literal -offset 4n
|
||
|
# /dev/ad0s1c:
|
||
|
type: ESDI
|
||
| ... | ... | |
|
will not install bootstrap code that overlaps it.
|
||
|
.Sh SEE ALSO
|
||
|
.Xr ccd 4 ,
|
||
|
.Xr disklabel 5 ,
|
||
|
.Xr disklabel64 5 ,
|
||
|
.Xr disktab 5 ,
|
||
|
.Xr boot0cfg 8 ,
|
||
|
.Xr diskinfo 8 ,
|
||