[The_Victor]

If you're worried about it use this debug script to erase your harddrive. I'm told this resets the magnetic media.

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
xxxx:010C INT 13
xxxx:010E INT 20
xxxx:0110
-G

[Mike Bates]

If you're worried about it use this debug script to erase your harddrive. I'm told this resets the magnetic media.

Oh, OK. let me try tha

[SAJ]

This looks a bit dubious for erasing a hard drive. INT 13h is the BIOS diskette interrupt. This script appears to write random information to track 0, sector 1 of the floppy, the boot sector.

It might be the case that specifying the drive number (DL) as 80h might be an undocumented backdoor to 'fooling' the interrupt to write to the hard drive, but I've no info on this. Ordinarily, when using this interrupt, one would specify the drive number as 0 or 1, for drives A: or B: respectively.