greg@mobius.Viewlogic.COM (Gregory Larkin) (02/21/91)
Hi all,
I've got a nasty problem with my AT (286-6). I was trying to create
a few partitions on my drive 0 (type 2 - 21 meg). I've also got a
type 3 installed as drive 1 (31 meg). Somehow, through, a combination
of running FDISK, hi-level, and low-level format programs, track 0 on
drive 0 is now bad. Right now, I'm using WDFMT (winchester disk
formatter - low-level). It apparently formats drive 0 with no problems.
I then run FDISK. It allows me to create a 21 meg partition on drive 0.
This would be C:, I guess. It then reboots the machine from floppy.
When it's done, C: cannot be accessed. If I then fire up FDISK again,
it reports "Unable to access drive 0". If I use WDFMT to verify the
disk media, it reports that track 0 and track 1 are damaged.
How the hell could a program irrevocably damage those tracks and not be
able to recover??? Doesn't a low-level format completely wipe out any
garbage that may have been there?
I also tried the "CHECKIT" program to low-level format the disk. It
tries and reports "BIOS ERROR". This concerns me a little, since WDFMT
seems to work.
Obviously, something is still wrong with the disk. Does anyone know?
BTW: Does the boot sector *have* to be in sector 0, track 0? Could
tracks 0 and 1 be marked as bad with the low-level formatter and then
run FDISK?
Please respond via email to "greg@viewlogic.com". If there is interest,
I will summarize.
Thanks,
--
Greg Larkin (ASIC Engineer)
Viewlogic Systems, Inc. (The CAE Company)
293 Boston Post Road West ____________________________________________
Marlboro, MA 01752 |"This is a fragile ball we are living on; |
508 480 0881 x321 |it's a miracle and we are destroying it.."|
Email: greg@Viewlogic.COM |Peter Garrett, Midnight Oil |
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