Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!linus!philabs!seismo!hao!hplabs!sri-unix!ciaraldi@Rochester.ARPA From: ciaraldi@Rochester.ARPA Newsgroups: net.micro.cpm Subject: Re: Non-Heath 8" disk drives on H-100/Z-100 systems Message-ID: <3085@sri-arpa.UUCP> Date: Wed, 13-Jul-83 18:19:41 EDT Article-I.D.: sri-arpa.3085 Posted: Wed Jul 13 18:19:41 1983 Date-Received: Fri, 15-Jul-83 18:31:16 EDT Lines: 20 From: Mike CiaraldiI am using a Shugart 851 and a CDC drive, both 8-inch and double-sided, on a Z-100. They work OK, under both CP/M-85 and ZDOS. However, occasionally they don't; I will get a seek error, especially on FORMAT. Usually rebooting fixes this up. This problem is only on the Shugart, not the CDC. I tried changing the step rates under CP/M and ZDOS using the info in the Zenith manuals. This fixed up the CP/M-85, but not the ZDOS. This caused me to find out about ANOTHER problem. The MAP command on ZDOS 1.1 will not let you declare a drive imaginary, so it can share a physical disk with another drive. I called the Zenith hotline and they mailed me a new version. This works, except now there is no way to make a drive un-imaginary. There is no switch for it, and MAP/Z, which is supposed to reset the drive configuration, does not affect imaginary drives. I called Zenith back and they said it is supposed to work this way. Mike Ciaraldi University of Rochester