18 Jan
2005
18 Jan
'05
7:47 a.m.
To add to the fun,...
SOME drives had a media sensor that would adjust the write current for HD
diskettes, others required that come from a signal from the controller.
The early PS/2 drives did NOT have a sensor. They would "successfully"
format a 720K diskette to 1.4M. (Reliability was less than perfect due
to 600 Oersted v 750 ) But then, when that disk was put into a
drive that had a sensor, the drive would have problems with it.
That's what hole punches are for...........
Dan