30 Apr
2024
30 Apr
'24
8:55 p.m.
On Tue, 30 Apr 2024, John Herron via cctalk wrote:
Yup, that's all I used to do. Some scotch tape
over the floppy disk hole to
make the system see it as DD. If it didn't automatically format as 720, you
could specify size or sector count with format.com in dos.
Somemedia sensors are optical; use opaque taps.
I did hear folks say it wasn't always reliable
(similar to 5.25 disks being
formated on a high density drive) but I never saw any problems in my
limited use.
3.5" are 600 VS 750 oersted;
5.25" are 300 vs 600 Oersted;
a low density 5.25 formatted as "high density" won't do well;
a high density 5.25" (1.2M) formatted as low density ("360K") sill self
erase VERY soon, sometimes before you can even get it over to another
machine. We had a college purchasing agent in bed with "Roytype", who
kept giving us "1.2M" floppies ofr out TRS80s; they self erased very soon.
--
Grumpy Ol' Fred cisin(a)xenosoft.com