12 Oct
1998
12 Oct
'98
8:08 p.m.
"Fred Cisin (XenoSoft)" <cisin(a)xenosoft.com> wrote:
IBM started with Tandon TM100-2.
No, with the IBM PC (model 5150), they started with the TM100-1, a 40 track
single sided disk. In PC-DOS 1.0 they only used 8 sectors per track, for a
total disk capacity of 160K. In PC-DOS 1.1 they added support for the 9
sector format, increasing the capacity to 180K.
IIRC, the dual-sided drives were not available (from IBM) until the
introduction of PC-DOS 2.0.
To this day, the MS-DOS format command still has options for single-sided
and 8 SPT formats.
Eric