3 Jun
2012
3 Jun
'12
5:17 p.m.
On 3 Jun 2012 at 16:52, Mr Ian Primus wrote:
If you bulk erase a DD disk, then format it/write to
it in a HD drive
in DD mode (double stepping), and then further update it with a real
DD drive, it'll usually work.
Obviously, "HD" means something different to me--500kbit/sec MFM data
rate at 360 RPM recording, versus 250kbit/sec MFM data rate at 300
RPM.
If what was meant was 250Kbit/sec in a 96 tpi versus a 48 tpi drive,
please say so. I still have quite a few "720K" 5.25" MS-DOS
formatted floppies kicking around, recorded at 96 tpi. Heck, if
memory serves, the Data General One laptop used them...
But if you mean HD=double data rate/high density, that's a different
kettle of fish.
--Chuck