origins of IBM 3740 diskette format

[der Mouse]

>> ([...]  I also have a disk - a big, 5¼" full-height drive of, I
>> think, about 1G - that has 1024-byte sectors, which I keep as an
>> example of a device with >512-byte sectors.)
> If you want to store/carry something smaller with a large sector
> size, get yourself a Tandy Portable Disk Drive ([...], 1280 bytes per
> sector. ;-)

> Small, light, works off the serial port, and ontopic!!! ;-)

Well, I suspect the 1K-sector drive I have is ontopic, actually. :-)

But the Tandy drive you suggest wouldn't do because it's not SCSI, and,
though I omitted the adjective in the text talking about that drive
(expecting it to be inferred from context), what I really meant is
"...an example of a SCSI disk drive with >512-byte sectors".

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