Using DEBUG to Start a Low-Level Format

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The Western Digital 8-bit hard disk controller card ROM contains alow-level formatting utility. This utility can be started using theMicrosoft MS-DOS DEBUG utility. Western Digital 16-bit controllercards need a disk-based formatter to do the low-level formatting.

For more information, contact Western Digital technical support andinformation center.

NOTE: Use the method listed below at your own risk.
Use the following procedure to perform a low-level format:

  1. Start DEBUG by typing the following at the command prompt:
  2. 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 program in the controller's ROM will execute and will query forinterleave factor and other parameters. Answer these as appropriate;the hard disk will then be low-level formatted.

The following addresses are valid for BIOS low-level format routineson Western Digital hard disk controller cards when using DEBUG.COM toperform a low-level format:
   Address    Description   ----------------------   C800:5     Used by most Western Digital hard disk controllers for              XT- and AT-compatible computers, including all WD-1007A              series cards   CA00:5     Alternate address used on some XT hard disk controller              cards   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              onboard BIOS)   CE00:5     Alternate address used on some XT hard disk controller              cards				
The above information is valid not only for hard disk controller cardsmarketed directly by Western Digital, but also for hard diskcontrollers manufactured by Western Digital for other companies. Forexample, the Seagate ST-01 and ST-02 hard disk controllers aremanufactured by Western Digital.

The addresses noted above as alternate addresses can usually beselected by installing jumpers on the hard disk controller card, forcontrollers that have alternate addresses. If the jumper on a cardwith alternate address capability is left disconnected, the defaultaddress (C800:5) is used.

The information above was obtained from sources independent ofMicrosoft; we make no warranty, implied or otherwise, regarding thisinformation's accuracy or usefulness. This information is suppliedonly for your convenience.
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Article ID: 60089 - Last Review: 12/04/2015 09:04:29 - Revision: 2.0

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