Date   : Mon, 07 May 1990 07:22:36 PDT (Monday)
From   : "Rex_E._Robards.DlosLV"@Xerox.COM
Subject: floppy drive hardware

In message-id 9DD0D3D47EDF602A04@uwplatt.edu, Lance Tagliapietra asks,
> (1) What is the difference between 720K and 1.44M 3.5 inch drives.

1.44 MB drives have 18 sectors per track.  720 KB drives have 9 sectors per
track.

>(2) What is the pinout for 3.5in drives. (a pinout for 5.25in is given)

The pinout for 3.5" drives is the same (3.5" drives are indistinguishable
from 5.25" drives from a hardware perspective).

Rex (rroba.dloslv@xerox.com)