Detecting inserted floppy drive WAS: Raymond Check discusses MS DOS Floppy Disk Cache

[Chuck Guzis]

On 10/2/19 2:07 PM, Ali via cctalk wrote:
> Just wondering if anyone (Chuck, Fred?) knows what is the exact technique referred to in this other post by Raymond?
> 
> devblogs.microsoft.com/oldnewthing/20090402-00/?p=18643
> 

Not enough information to know. It should be noted that one needn't spin
up drives to select them and poll them.   I wonder if this is the
difference between "drive ready" or "disk changed" on pin 34 of the
interface.

-Chuck