Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!bloom-beacon!mit-eddie!uw-beaver!uw-june!uw-entropy!dataio!suvax1!woodman From: woodman@suvax1.UUCP (David Woodman) Newsgroups: comp.sys.ibm.pc Subject: Re: Seagate ST-251 question Summary: my 2 cents Message-ID: <1224@suvax1.UUCP> Date: 26 Sep 88 00:14:05 GMT References: <251@fsc2086.UUCP> <16800373@clio> <606@dasher.SanDiego.NCR.COM> Organization: Seattle University, Seattle, WA. Lines: 22 > In article <16800373@clio> berger@clio.las.uiuc.edu writes: >> >>The ST-251 has 820 cylinders, 4 heads, and 17 sectors per track. > ~~~~~~~~ > My book shows that it has 6 heads. And the ST-251 only has 17 sectors per track IF formatted by an MFM controller. It will have 26 sectors per track if formatted by an RLL controller. I know, I know, the ST-251 is spec'd as an MFM drive but a friend of mine is running it on an RLL controller. I don't advocate it, but it seems to work. (P.S. The ST-251 seems to come in two flavors, 40ms & 28ms. When I bought mine, it turned out to be 28ms but was charged for the 40ms. Either the company did not know the difference or there is something I don't know about.) ------------------------------------------------------------------------------ David Woodman UUCP: ...!uw-entropy!dataio!suvax1!woodman Seattle University USNail: P.O. Box 23202, Seattle WA 98102 Phone: (206) 223-9470 ------------------------------------------------------------------------------