19 Apr
2013
19 Apr
'13
2:44 p.m.
On 04/19/2013 10:17 AM, Fred Cisin wrote:
On Fri, 19 Apr 2013, geneb wrote:
Indeed, and some makes of 1.44M drives can even be jumpered to pass
READY/ and/or DISK CHANGED/ signals as well. Block the density sensor
and the host equipment can't tell the difference.
--Chuck
Rats. Finding 720k drives these days is nearly
impossible and when you
can find them, the seller prices them as if they're made from palladium
and coated with unicorn tears.
Most 1.4M drives can be trivially modified to be 720K only. start by
blocking the light/photocell (if it has one) of the media sensor.
You might need to strap the RWC signal
(Many of the IBM PS/2 1.4M drives did not have a media sensor and relied
on RWC signal from the FDC)