Erase All HDD Information
This debug routine is used to erase all partition information on the hard disk drive and is only recommend for experienced users or users who are unable to delete the partition information through fdisk. In the below debug routine, only type what is in bold from line 3 to 8, you will get a response if typed in properly. If you get a response continue to type the bold text as shown below in the below example. A:\>debug
-F 200 L1000 0
-A CS:100
xxxx:0100 MOV AX,301
xxxx:0103 MOV BX,200
xxxx:0106 MOV CX,1
xxxx:0109 MOV DX,80 (80 for hd 0 or 81 for hd 1 ) xxxx:010C INT 13
xxxx:010E INT 20
Program terminated normally

-q Once this debug routine is complete, reboot computer and all partitions should be erased. Before anything can be installed back onto the computer you must run Fdisk and recreate the partition as well as format the hard disk drive.