Date   : Thu, 21 Jun 1984 17:50:44 PDT (Thu)
From   : Bridger Mitchell <bridger@Rand-Unix.ARPA>
Subject: Re: Question from a Novice

A contributing factor may be the BIOS firmware shipped with
the Kaypro 4's and 10's.  It doesn't correctly support the CPM disk-reset
function call.  A drive, once logged in with a double-sided disk, remains
double-sided until the next warm boot, despite any disk-reset call.
This is a pain in programs that permit disk swapping, if you have
both single and double-sided disks.

One solution is the CP/M upgrade from Plu*Perfect Systems, which does
the disk-resets correctly.

--bridger