del@pilchuck.UUCP (05/22/86)
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I have a strange bug to report that seems to affect some PC-XT and
PC-AT's but not others. What happens is you get an error on the drive,
which is "not ready" for the AT, and "general failure" on the PC. It does
not go away without a reboot.
It can reliably be generated on effected PC's by trying to boot with a
non-system disk in drive A, the opening the door and pressing space bar.
On the AT, that will sometimes work, but running an EGA graphics program
will always cause the symptom (!?!). I don't know WHAT graphics has to
do with disk drives, I really don't. Anyway, I have observed this on 3
PC's here at work, and AT I use at home.
I have tried this: mov ax,0
int 13
which the Tech. Ref. says is supposed to reset the disk system. No help.
Any body know what is happening, or how to REALLY reset the disk system?
A simple three finger reboot always clears the failure...
Thanks.