from Symmetric Computer Systems.
Modifications Copyright (c) 1987 Regents of the University of California.
All rights reserved. The Berkeley software License Agreement
specifies the terms and conditions for redistribution.

@(#)disklabel.5.5 6.1 (Berkeley) 06/18/87

C 7 disklabel - disk pack label #include <sys/disklabel.h> Each disk or disk pack on a system may contain a disk label which provides detailed information about the geometry of the disk and the partitions into which the disk is divided. It should be initialized when the disk is formatted, and may be changed later with the disklabel (8) program. This information is used by the system disk driver and by the bootstrap program to determine how to program the drive and where to find the filesystems on the disk partitions. Additional information is used by the filesystem in order to use the disk most efficiently and to locate important filesystem information. The label is located in sector number LABELSECTOR of the drive, usually sector 0 where it may be found without any information about the disk geometry. It is at an offset LABELOFFSET from the beginning of the sector, to allow room for the initial bootstrap. The format of the disk label, as specified in < sys/disklabel.h >, is

.so  /usr/include/sys/disklabel.h
 "SEE ALSO"
disktab(5), disklabel(8)