Drive capacity names (Was: WTB: HP-85 16k RAM Module and HPIB Floppy Drive

Mark J. Blair nf6x at
Wed Nov 15 11:56:25 CST 2017

> On Nov 15, 2017, at 09:44, Fred Cisin via cctalk <cctalk at> wrote:
>>> No, the 9122C model has two 1.44M drives. HP made several earlier 3.5"
> On Wed, 15 Nov 2017, Christian Corti via cctalk wrote:
>> No, the 9122C has two high-density, two-sided 80 cylinder drives. A drive has no capacity, this is the function of the on-disk format.
>> ;-)
> "high-density" is even more meaningless than referring to them by their capacity in a given format.  It is a BOGUS marketing term!

Bogus as it may be, compatible media for those drives commonly has "HD" printed on the box and molded into the diskette's plastic jacket. It's a useful term for identifying the compatible media.

Mark J. Blair, NF6X <nf6x at>

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