Hard drive got locked

[czgu]

I got a virus which locks up my HD. I can't boot from the HD, can't boot from floppy.

I know this is a virus called logic lock. The DOS file io.sys has loader, IO1, IO2 and IO3 modes. IO1 includes a program SysInt_I which reads partition table when booting the PC. If the table set to a loop (by the logic lock), the program will never be able to finish reading, then system is dead locked. That is the situation I have now. Anytime if system try to read this HD, whole system will be locked up. So that is why I can't use it as a slave HD. I don't know how to fix the problem, and need help badly.

One idea is :

1. write a small program which can read 0 cylind, 0 head, 1st sector on a bootable floppy, and write to other place.
2. write samething in the 0,0,1 on that floppy which block reading to HD (need block reading the old INT 13)
3. create something to jump to floppy bootable area which has moved to other place ....

help me out

[Sid]

Can you boot to a CD? If so then debug the drive. You will need a bootable cd with dos on it(have someone make you a cd with windows 98 startup disk on it). from dos type(warning read below)
Warning You will lose everything on the drive! if you do this

debug<enter>
f 200 L1000 0<enter>
a cs:100<enter>
mov ax,301<enter>
mov bx,200<enter>
mov cx,1<enter>
mov dx,80<enter>
int 13<enter>
int 20<enter>
<press enter at next dash>
G<enter>
(program terminated normaly) Yank the power cord out for 10 min(go have a beer or two). Jumper nvram to clear everything out of bios. Reboot from the cd and go about your normal install.

I ran across this virus a while back... Its smart and will move its self around in your system as you try to disinfect it. I will make you a bootable cd if you need it(they will need clone cd or adaptec software)

[HMS White Star]

Well I would put you take you hard drive complete out of the boot order if possible, download a program called gwscan from gateway.com. Make a bootable disk from this and use the option that says to write zeros to the drive. you can get gwscan from here.


ftp://ftp.gateway.com/pub/hardware_support/drivers/win3.x_and_dos/mass_storage/hard_drives/7510801.exe

they have a readme in there just read it and follow the instructions.

[Sid]

Yep the zeroing software works great too. I like debug cause its fast and to the point. As antique as dos is it still gets the job done!