* Copyright (c) 1982, 1986 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
* @(#)dkbad.h 7.1 (Berkeley) 6/4/86
* Definitions needed to perform bad sector
* revectoring ala DEC STD 144.
* The bad sector information is located in the
* first 5 even numbered sectors of the last
* track of the disk pack. There are five
* identical copies of the information, described
* by the dkbad structure.
* Replacement sectors are allocated starting with
* the first sector before the bad sector information
* and working backwards towards the beginning of
* the disk. A maximum of 126 bad sectors are supported.
* The position of the bad sector in the bad sector table
* determines which replacement sector it corresponds to.
* The bad sector information and replacement sectors
* are conventionally only accessible through the
* 'c' file system partition of the disk. If that
* partition is used for a file system, the user is
* responsible for making sure that it does not overlap
* the bad sector information or any replacement sector.s
long bt_csn
; /* cartridge serial number */
u_short bt_mbz
; /* unused; should be 0 */
u_short bt_flag
; /* -1 => alignment cartridge */
u_short bt_cyl
; /* cylinder number of bad sector */
u_short bt_trksec
; /* track and sector number */