18 Sep
2014
18 Sep
'14
11:24 p.m.
On 09/18/2014 05:49 PM, Fred Cisin wrote:
MS-DOS 2.11 (THERE WAS NO PC-DOS 2.11) was readily
customized by OEMs.
Some added 80 track SS and/or DS drives, including 3.5" (such as
Gavilan) Many/most of the 2.11 3.5" formats were NOT the same as PC-DOS
3.5" "720K", which came with PC-DOS 3.20
It's worth noting that although both MS-DOS and PC-DOS 3.5" "720K"
formats were defined, they weren't the same in terms of FAT and cluster
size. By MS-DOS 5.0, the difference had been resolved (in favor of
Microsoft).
NEC people (MS-DOS not PC compatible) can now giggle
joyfully.
Indeed, PC98 used the *same* format for 8", 5.25" and 3.5" media. In
other words, they did it right. The 3.5" HD drives spin at 360 RPM,
just like the HD 5.25" and 8" ones.
--Chuck