Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!linus!philabs!seismo!hao!hplabs!sri-unix!POURNE@mit-mc From: POURNE%mit-mc@sri-unix.UUCP Newsgroups: net.micro.cpm Subject: Function 37 Message-ID: <15602@sri-arpa.UUCP> Date: Mon, 23-Jan-84 00:10:00 EST Article-I.D.: sri-arpa.15602 Posted: Mon Jan 23 00:10:00 1984 Date-Received: Thu, 19-Jan-84 01:14:19 EST Lines: 17 From: Jerry E. Pournelle It is not required that you RESET the system if the BIOS is properly written, but you will have to do a ^c warm boot if you have changed disks; R/O actually means that the bit map doesn't match t he current directory entries. As to BIOS detecting door opening, on 5 1/4" disks there is no hardware detect is there? Nor do I know a way to detect whether a door HAS BEEN OPENED although you can have (and my BIOS does) a look at the door to see if it is open NOW and put up a message like "Load Drive A" or "Please close Door" or some such; I recall startling some Morrow and Compupro troops a couple of years ago by inviting them over to the house and showing them I could access non-existent disks, open doors, or anything else, and recover from it. But that was before fn 37, which can have unrecoverable errors.