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- .\" This manpage has been automatically generated by docbook2man-spec
- .\" from a DocBook document. docbook2man-spec can be found at:
- .\" <http://shell.ipoline.com/~elmert/hacks/docbook2X/>
- .\" Please send any bug reports, improvements, comments, patches,
- .\" etc. to Steve Cheng <steve@ggi-project.org>.
- .TH "SDISKLABEL" "8" "23 November 2003" "sdisklabel" ""
- .SH NAME
- sdisklabel \- Create/modify disklabels on Linux/Alpha systems
- .SH SYNOPSIS
- .sp
- \fBsdisklabel\fR \fBdrive\fR [ \fB print zero sum\fR ]
- .sp
- \fBsdisklabel\fR \fBdrive\fR \fBsize\fR \fBpartsize\fR
- .sp
- \fBsdisklabel\fR \fBdrive\fR \fBpartnum\fR \fBoffset\fR \fBsize\fR \fBparttype\fR
- .SH "COPYRIGHT"
- .PP
- \fBsdisklabel\fR is Copyright (C) by Red Hat Inc. The
- author of this man page tried to track down the original author, but was
- unable to do so. A final Bugzilla entry with RedHat yielded the following
- reply:
- ``I can't track down a Bob Manson (and I cannot find any record of his association
- with Red Hat in the aboot sources), but any work he did on behalf of Red Hat
- would be property of Red Hat, and you can consider all our changes to be release
- under the GPL the same as the rest of the aboot package.''
- .SH "DESCRIPTIONS"
- .PP
- \fBsdisklabel\fR
- can be used to create partitions (called disklabels) on Linux/Alpha
- systems. You \fBmust\fR use disklabels instead of the
- DOS type
- partitioning scheme on any hard disk which you want to boot from via SRM or
- which you want to share with HP Tru64.
- If you instead are booting from \fBmilo\fR
- then you \fBmust not\fR use disklabels on your boot hard disk.
- .PP
- Even if you are using disklabels, it is recommended to use
- \fBfdisk\fR(8) instead
- of \fBsdisklabel\fR.
- .PP
- \fBsdisklabel\fR also assumes
- you have a SCSI disk with 512-byte sectors,
- though it should work fine on an IDE drive as well. All sizes are
- specified on the command line in sectors.
- .PP
- There are 8 partitions in total which are numbered from 0 to 7. They
- correspond to BSD disklabels A to H.
- Partitions have to be added sequentially, as
- \fBsdisklabel\fR won't let
- you leave empty partitions unlike many BSD disklabel programs. If you
- want this (or if you want overlapping disk labels)
- use \fBfdisk\fR(8) instead.
- .PP
- First off, if you have an invalid disk label (you've never run
- \fBsdisklabel\fR on this disk
- before) you have to issue
- .PP
- \fBsdisklabel \fI/dev/sda zero\fB\fR
- .PP
- (\fI/dev/sda\fR is the device you're partitioning,
- substitute as appropriate).
- .PP
- This zeros out your disk label. Only do this if you really want to
- zero your disk label. It just does it; it doesn't ask, or warn, or
- anything.
- .PP
- The program also probably printed out the size of your disk in kb. If
- it was wrong, you now get to use the "\fIsize xxx\fR"
- option along with the
- rest of these commands. The size isn't critical, it's just used to try
- and make sure you don't go past the end of the disk.
- .PP
- Next, add your first partition. This \fBdoesn't\fR
- start from 0, as you
- have to leave room for the boot loader and other stuff. 256K (or 512
- sectors) will be enough.
- .PP
- Let's pretend that you want to make a 250000 kb partition starting
- from sector offset 512:
- .PP
- \fBsdisklabel \fI/dev/sda 0 512 500000 8 print\fB\fR
- .PP
- The last number is the filesystem type, and is currently 8 for ext2fs
- filesystems. (A different number would be used to specify an
- Tru64
- partition, for example).
- .PP
- If all was successful, the program should print out the partition (the
- last keyword, "print", specifies that it should print the partition
- after modifying it with the previous command), and you should see
- something like
- .PP
- .sp
- .RS
- .sp
- .nf
- ----------------------------------------------------------
- I think your disk is 528870K total size.
- If I'm wrong, override the size with the 'size num' option
- partition 0: type 8, starts sector 512, size 500000
- ----------------------------------------------------------
- .sp
- .fi
- .RE
- .sp
- .PP
- You can then add the next partition, which would be partition 1.
- To add a second partition that is 200000 kb long, you'd run
- .PP
- \fBsdisklabel \fI/dev/sda 1 512256 400000 8 print\fB\fR
- .PP
- And both partitions would then be printed out.
- .PP
- If for some reason the size got determined incorrectly, you'd do
- instead
- .PP
- \fBsdisklabel \fI/dev/sda size 528870 0 512 400000 8 print\fB\fR
- .PP
- The size option should come immediately after the device name, and the
- size is the total # of sectors on the drive.
- .SH "BUGS"
- .PP
- \fBsdisklabel\fR does not check for all errors, so
- use with care.
- .SH "NOTES"
- .PP
- If you want to share the disk with HP Tru64
- (OSF/1) it is recommended to
- use the Tru64
- partitioning tools to prepare the disk.
- .PP
- To actually boot from the freshly labeled disk you also need to install
- a boot strap as well, see
- \fBaboot\fR(8) and \fBswriteboot\fR(8)
- for details.
- .PP
- The print command may be placed before or after any other command.
- .PP
- In case you do want to leave empty partitions or create labels which
- extend beyond the end of the disk (e.g. when you know
- \fBsdisklabel\fR is reporting a wrong size) then
- use can use the \fIforce\fR switch on the command line.
- .SH "AUTHOR"
- .PP
- This man page was written by Helge Kreutzmann <kreutzm@itp.uni-hannover.de> for the Debian GNU/Linux project but may be used by others. It is
- heavily based on the \fIREADME\fR provided along with the
- \fBsdisklabel\fR source.
- .SH "SEE ALSO"
- .PP
- \fBfdisk\fR(8), \fBaboot\fR(8), \fBswriteboot\fR(8)
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