Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!watmath!clyde!rutgers!pyrnj!mirror!gabriel!inmet!lipsett From: lipsett@inmet.UUCP Newsgroups: comp.sys.mac Subject: 512K Mac/800K Drive Message-ID: <127200001@inmet> Date: Tue, 9-Dec-86 12:51:00 EST Article-I.D.: inmet.127200001 Posted: Tue Dec 9 12:51:00 1986 Date-Received: Sun, 14-Dec-86 06:38:16 EST Lines: 32 Nf-ID: #N:inmet:127200001:000:1328 Nf-From: inmet.UUCP!lipsett Dec 9 12:51:00 1986 I have a vanilla 512K Mac and am considering a second disk drive. I would like to get an 800K drive, but have a number of questions that I can't seem to get consistent answers to. Perhaps someone out there can help me. 1. I understand that I can use the 800K drive as an 800K drive if I am running 3.2 and 5.3 with the HD20 file. But can I use the 800K drive as a 400K drive with the old System and Finder files (e.g., as a data disk for existing applications in which I might not want to replace the system software)? 2. Is there a way to format an 800K disk as an MFS disk? If so, how does this relate to the above question with respect to existing applications? Do I still need the HD20 file and the new system software? (BTW, I can't seem to get my 512K to format a single-sided disk as HFS no matter what I try - I have tried holding down the option key and all that - what am I missing?). 3. Have there been any reported problems with 400K disks in 800K drives with respect to heads? What fraction of (good) 400K disks can be formatted double-sided and have them work? 4. What external 800K drives do people recommend? Thanks in advance. e-mail would probably be more appropriate unless you think the answers are of general interest. Roger Lipsett ihnp4!inmet!lipsett mirror!inmet!lipsett