[Coco] So, does anyone know where to get disk drives?

[Michael Graham]

On 09/02/2013 12:10 PM, Gene Heskett wrote:
>
> I don't believe there is one for the 5.25" diskette, the QD has another
> notch opposite the write protect notch.  AFAIK there is no diff in the
> magnetic characteristics between the 48tpi rated DD disk and the 96tpi
> rated disk other than a more critical surface scan, probably done on 1 per
> 10,000 made basis.  But since I expect that the worlds supply of disks has
> been made & we are just cleaning out warehouse's in Sechwan, none of the
> currently available stuff has been subjected to even that close a look
> unless its been preformatted to messydos FAT12 stds.  Even that isn't fool
> proof, the verify read takes 3x the time that the format write takes, so
> failed format disks are likely not recycled because the time consuming read
> verify step was skipped.
>
> Cheers, Gene

I think there must be a difference in the magnetics, or else I wouldn't 
have such trouble using 96tpi disks in older 48tpi drives. At least for 
the disks I have, when I try to format a 96tpi disk in a 48tpi drive, I 
can't ever read it back.

--Michael