Using DEBUG to Start a Low-Level Format
The information in this article applies to:
Microsoft MS-DOS operating system versions 3.1, 3.2, 3.21, 3.3, 3.3a, 4.0, 4.01, 5.0, 5.0a, 6.0, 6.2, 6.21, 6.22
The Western Digital 8-bit hard disk controller card ROM contains a
low-level formatting utility. This utility can be started using the
Microsoft MS-DOS DEBUG utility. Western Digital 16-bit controller
cards need a disk-based formatter to do the low-level formatting.
For more information, contact Western Digital technical support and
NOTE: Use the method listed below at your own risk.
Use the following procedure to perform a low-level format:
The program in the controller's ROM will execute and will query for
interleave factor and other parameters. Answer these as appropriate;
the hard disk will then be low-level formatted.
- Start DEBUG by typing the following at the command prompt:
- At the DEBUG hyphen (-) prompt, type one of the following commands:
The above commands execute instructions starting at either location
C800:0005, CA00:0005, CC00:0005, or CE00:0005, depending on which
address is selected. If the computer freezes with the first address
listed above, try the second address.
The following addresses are valid for BIOS low-level format routines
on Western Digital hard disk controller cards when using DEBUG.COM to
perform a low-level format:
C800:5 Used by most Western Digital hard disk controllers for
XT- and AT-compatible computers, including all WD-1007A
CA00:5 Alternate address used on some XT hard disk controller
CC00:5 WD-1007V-SE1 and WD-1007V-SE2 controllers;
WD-1003V-SR and WD-1006V-SR controllers, Revision F003
and F005 only (other SR-series controllers do not have
CE00:5 Alternate address used on some XT hard disk controller
The above information is valid not only for hard disk controller cards
marketed directly by Western Digital, but also for hard disk
controllers manufactured by Western Digital for other companies. For
example, the Seagate ST-01 and ST-02 hard disk controllers are
manufactured by Western Digital.
The addresses noted above as alternate addresses can usually be
selected by installing jumpers on the hard disk controller card, for
controllers that have alternate addresses. If the jumper on a card
with alternate address capability is left disconnected, the default
address (C800:5) is used.
The information above was obtained from sources independent of
Microsoft; we make no warranty, implied or otherwise, regarding this
information's accuracy or usefulness. This information is supplied
only for your convenience.
Additional query words:
6.22 3.0 3.00 3.01 3.2 3.20 3.21 3.22 3.3 3.30 3.30a 4.0 4.00 4.01 4.01a 5.00 6.00 6.20
Issue type :