31 Oct
2021
31 Oct
'21
10:27 a.m.
On 10/31/21 9:57 AM, geneb via cctalk wrote:
I'm working with the developer of the Applesauce disk imaging tool in
order to iron out some issues with 8" disk support.
I'm using a Qumetrak 842 disk drive that's got support for both double
and single-sided media.? This means that it's equipped with two index
hole sensors, slightly offset from one another.? It's my understanding
that single-sided media has the index hole in one spot on the jacket,
and double-sided media has one in a slightly different location.
The issue at hand is some NIB Dysan double-sided 8" media I have - the
disks have index holes in the jacket in both locations.? Is this
typical, or do I have some weird "special" disks on my hands?? The
Applesauce author posits that the combination of the dual-sensor drive
and the dual-hole media wouldn't typically find themselves together.? Is
this accurate?? If it's not, how would a system contemporary with the
media have handled the two index holes?
Gene, are you certain that these aren't "flippy disks" (two index
apertures)?
But I've seen what you describe.
I recall one occasion where I received the single-double type that you
describe and having to cover the single-sided hole to get to the other
side of the disk.
--Chuck