SURVPC Digest - 8 Sep 2000 to 9 Sep 2000 (#2000-282)
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On Sat, 9 Sep 2000 18:43:23 +0300 Saleh Khiari <[EMAIL PROTECTED]> wrote:
> I have got a problem. I used my floppy disk drive to access 720kb diskette.
> The system tried with difficulties to read that floppy and succeeded. Since
> then the FDD has gone bad and I cannot access my HD floppy disk. Strange
> enough if I use the same 720kb diskette then the FDD reads it with
> difficulties, when I change to HD floppy the disk is not accessible.
Question: Are you certain that your FDD is a High Density (1.44 MB) drive?
Some FDD drives are for Double Density (720 KB) floppies only.
> I went to the bios and everything seems to be OK but I removed it from bios
> and booted system without FDD support and switched off and change the bios
> to use FDD but the same problem occur. I checked the system for virus and
> everything appears to be alright. I cleaned the drive with cleaner diskette
> and cleaner.exe program but no the problem still exist. Norton diagnostic
> does not work either.
> Could somebody explain to me what has happened? and how to recover from
> this problem?
If you are certain that you have a High Density (1.44 MB) drive, then
maybe the read/write heads have gotten out of alignment. Back in the
days when floppy disk drives were expensive pieces of hardware it was
practical to send the floppy drive to a special high-tech repair facility
to have the heads re-aligned and adjusted. Nowadays the charges for the
head re-alignment job and the shipping costs would far exceed the cost of
a new floppy disk drive. You can't do the job yourself without specialized
equipment and training. It is perfectly OK to read a 720 KB floppy in a
high density drive. Doing so cannot damage the drive. If your read/write
heads have gotten out of alignment, then this is due to some other cause.
Maybe your read/write heads are not out of alignment. Maybe you just have
a loose connection in your ribbon connectors or your power connector.
I suggest you just check your connections and/or try substituting your FDD
for another that is known to be OK. Good luck!
Sam Heywood
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