6 Oct
2012
6 Oct
'12
8:53 a.m.
> http://www.csulb.edu/~murdock/drivparm.html
> says that type 3 is single density 8"!
> (and type 4 is double density 8")
> I wonder which versions of MS-DOS and which, if any, of PC-DOS support
> THOSE drive types directly?
On Fri, 5 Oct 2012, Chuck Guzis wrote:
I've wondered if those were grandfathered in by
non-PC vendors, such as
NEC. Anyone try to format a single-density 8" on their APC by way of
specifying DRIVPARM?
If anybody succeeds, what size sectors, and how many per track?
Single or double sided?
That MIGHT even work to redefine a 1.2M drive as being an 8"!
(/F:2 used to work to declare a 720K 5.25" drive as being a 3.5"!)
Would the /F:4 option change anything of 1.2M format other than number of
cylinders? (77 instead of 80) Single or double sided?
I encountered many STRANGE behaviors with DRIVPARM.
For example, it worked fine with either PC-DOS 3.20 on a generic clone,
but with REAL IBM 5170 ROMs, it produced a message about unrecognizable
CONFIG.SYS command!
At that time, I was not aware of the /I option; I wonder if that would
have made a difference?
--
Grumpy Ol' Fred cisin at xenosoft.com