Use of DOS Utility HARD DISK PARTITION ZAPPER

For use by qualified computer service personnel only. This debug procedure will wipe out all disk partition(s) and data on a hard disk, including DOS, Xenix, and Novel Netware partitions. After Verifying you really want to do this enter DEBUG and duplicate the following exchange of entries and responses. When completed, reboot on a Toshiba DOS boot diskette, re-partition the drive using FDISK, and then format the drive (or go through the toshiba MS-DOS installation procedure as outlined in the manual).

DEBUG EXCHANGE COMMENTS
C> DEBUG ;type DEBUG from DOS and press enter
-a 100 ;type a 100 at debug hyphen and press enter
XXXX:0100 int 13 ;type int 13 and press enter
XXXX:0102 ;press enter
-rax ;type rax and press enter

AX 0000
:0301 ;type 0301 and press enter
-rbx ;type rbx and press enter

BX 0000
:200 ;type 200 and press enter
-f 200 L 200 0 ;type f 200 L 200 0 and press enter
-rcx ;type rcx and press enter

CX 0000
:0001 ;type 0001 and press enter
-rdx ;type rdx and press enter

DX 0000
:0080 ;type 0080 and press enter
-p ;type p and press enter (register contents displayed)
-q ;type q and press enter (quit)