Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!utgpu!water!watmath!clyde!cbatt!ihnp4!vax135!cjp From: cjp@vax135.UUCP Newsgroups: comp.sys.amiga Subject: Re: Reading MacDisks on Amiga Message-ID: <1758@vax135.UUCP> Date: Mon, 11-May-87 20:03:37 EDT Article-I.D.: vax135.1758 Posted: Mon May 11 20:03:37 1987 Date-Received: Fri, 15-May-87 05:29:55 EDT References: <8705080543.AA18112@cory.Berkeley.EDU> <112@l5comp.UUCP> <2112@hoptoad.uucp> <16641@amdcad.AMD.COM> Reply-To: cjp@vax135.UUCP (Charles Poirier) Organization: AT&T Bell Labs, Holmdel, NJ Lines: 17 Summary: Confusion In article <16641@amdcad.AMD.COM> tim@amdcad.UUCP (Tim Olson) writes: >In article <2112@hoptoad.uucp| farren@hoptoad.UUCP (Mike Farren) writes: >| disk than the 400/800K that they did. Twice the rotation speed == >| twice the data rate, after all. (Is this how IBM is getting 1.4M >If you doubled rotation speed and kept the data transfer rate constant, >you would get *half* the data storage capacity. Doubling the rotation Depends on your point of view (reading an existing disk twice as fast, or writing half as much to a disk); but this misses the point. I believe the bottleneck is not so much data rate or rotation speed, as it is the magnetic behavior of the media and read/write head. Charles Poirier (decvax,ucbvax,ihnp4,attmail)!vax135!cjp -- Charles Poirier (decvax,ucbvax,ihnp4,attmail)!vax135!cjp "The road to Hell is paved with good opinions."