2.5" laptop SCSI drive standards?

[Ethan Dicks]

On 9/22/09, Sridhar Ayengar <ploopster at gmail.com> wrote:
> Zane H. Healy wrote:
>> Wow, there is something I never knew.  There were 2.5" ESDI HD's?!?! I
>> didn't even know there were any smaller than 5.25".
>
> Come to think of it, didn't the PS/2 Model 70 have a 3.5" ESDI?

That sounds familiar.  The PS/2 Model 30 (not 286) came with a 3.5"
ESDI drive - with a full-width edge connector.  When the disk on the
one at work got too crowded, I replaced it with a 50 MB ST412 ("MFM")
disk and ISA controller, ignoring the motherboard disk controller.  I
remember the size because it was too large for a single partition
under DOS 3.x, so we had a new "D:" drive that caused some confusion
for some of the users (they had only experienced machines with 30MB
and smaller drives up to that point.)

-ethan