13 Dec
2005
13 Dec
'05
2:02 a.m.
On Mon, 12 Dec 2005 13:17:53 -0800
"Chuck Guzis" <cclist at sydex.com> wrote:
On 12/12/2005 at 12:50 PM Fred Cisin wrote:
The IBM PC-Convertible exclusively uses 720K 3-1/2" diskettes.
And the face of the Convertible floppy drives have the appearance
(for an Apple machine, they call it 'trade dress') of the PS/2
line. It's a real shame the Convertible doesn't support 1.44M
floppies, like the Toshiba 1000sx. That would make it a much more
current and usable machine.
January 1986, PC-DOS 3.20 supported 720K
3.5".
Later in 1986, PC-DOS 3.30 supported 1.4M.
The 720K 3.5" drive was introduced by IBM in 1986 as an option
for the standard PC-PC/AT product line. What I recall about the
PS/2 was the support for DSHD and DSED 3.5 diskettes. In fact,
drivers had been available earlier than PC-DOS 3.2 from third
parties for 720K 3.5" drives.
Cheers,
Chuck