Contact US

Log In

Come Join Us!

Are you a
Computer / IT professional?
Join Tek-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Tek-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

PC Hardware - Hard drive issue

How do you completely erase a hard drive? by micker377
Posted: 1 Mar 05

Use to get rid of overlays and get disk back to factory specs.


CAUTION: Use this at your own risk (desperation). It will totally erase your harddrive, with no way to restore.

DOS boot disk with at least Debug, Fdisk, and Format on it (Win98 Emergency Boot Disk has it all).
Boot to A: prompt - type DEBUG. a "-" will appear, start typing, and hit <enter> after each line.

The x's are for reference only, do not type. The rest of "Address" will appear on it's own.

Addresses  What you type
---------  -------------
           F 200 L1000 0 (ZEROS)
           A CS:100
xxxx:0100  MOV AX,0301
xxxx:0103  MOV BX,0200
xxxx:0106  MOV CX,0001
xxxx:0109  MOV DX,0080
xxxx:010C  INT 13
xxxx:010E  INT 20
xxxx:0110  <ENTER>       (Just hit enter key)

The "G" means GO, and it should give a message like "program terminated normally" (This is from the original instructions, it may be too fast to read on new systems).
The "Q" means Quit, and should return you to the A: prompt.
Note: if you try to access the hard drive at this time, you should get a "Drive not ready" error. Re-boot the DOS disk, partition and format the usual way.

<<<<<<<<<Remember - proceed at your own risk>>>>>>>>>>>>>>>

Back to PC hardware - Hard drive issues FAQ Index
Back to PC hardware - Hard drive issues Forum

My Archive

Close Box

Join Tek-Tips® Today!

Join your peers on the Internet's largest technical computer professional community.
It's easy to join and it's free.

Here's Why Members Love Tek-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close