17 May
2010
17 May
'10
1:45 p.m.
On 17 May 2010 at 20:37, Tony Duell wrote:
I;'ve never heard of there being different
_analogue_ alginment disks
(Catseye disks) for 720K and 1.44M 3.5" drives. Certainly the one
Ibought is good for both,
No, but Accurite sells both analog(ue) and digital alignment disks.
There are some 1.44MB drives of recent manufacture that *cannot* read
or write 720K (2D) media (there's no sensor or density select pin).
Another case of the plague called "cost reduction". But the upshot
may be that a *modern* digital alignment diskette is recorded at the
500 KHz data rate.
This admittedly is speculation, but should also be taken as a warning-
-and something to ask the vendor of said diskette before purchase.
--Chuck