stu892103@gcc.uucp (ATARI CORP.) (03/06/91)
Fellow Atarians, I have a hard drive question. I know that it is possible
to use SCSI and RLL drives on the atari with the proper controller/adapter, but
I would like to know if it is possible to use MFM drives. I don't know much
about hard drives at all. I haven't seen any postings about this, so I don't
care if replies are mailed to me or posted. If I get any mail response, I'll
post a summary. Thanks to any who reply.
Steve Greer
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Steven J. Greer | UUCP: ...!pitt!edinboro!gcc!stu892103
School:Box 2444 | INTERNET: stu892103%gcc@edinboro.edu
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Grove City, PA 16127 |A proud member of NEOSTAG, North Eastern Ohio
................................|ST Atari Group. Home of The Cryptic Wizard
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--------------------------------------------------------------------------------luoto@cs.Helsinki.FI (Markku Luoto) (03/08/91)
By the way... Does anybody know what kind of a drive they're using in SUPRA DRIVES I got one (bought 1988) with 30 megabytes formatted or so... Think it wascalled supradrive 30 ... I opened it once and the drive was a seagate... but how can you tell wether it's a mfm or something else ??? >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< >>>>>> " I'm completely operational & all my cicuits are functioning <<<<<< >>>>>> correctly...correc...corr...co...-! " : HAl9000 <<<<<< >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
GERLOFF@tubvm.cs.tu-berlin.de (Olaf Gerloff) (03/13/91)
In article <12052@hydra.Helsinki.FI>, luoto@cs.Helsinki.FI (Markku Luoto) says: > >I opened it once and the drive was a seagate... but how can you tell wether >it's a mfm or something else ??? > Hello Markku! If the drive was a Seagate it is very easy: Look at the drive type on the cover If the last character was a digit, it was a MFM drive (e.g. ST 225, 20 MB 5 1/4 inch MFM drive). If the last character was a R, it was an RLL drive (e.g. ST 238R, 5 1/4 inch 30 MB RLL drive). I hope this will help you. Greetings, Olaf ------- ******************************************************************************* * Olaf Gerloff * Internet: GERLOFF@tubvm.cs.tu-berlin.de * * Technical University Berlin (FRG) * BITNET : GERLOFF@DB0TUI11 * ******************************************************************************* * Impossible things will be executed immediately, * * miracles take a little longer! * *******************************************************************************
vsnyder@jato.jpl.nasa.gov (Van Snyder) (03/14/91)
In article <91072.145300GERLOFF@DB0TUI11.BITNET> GERLOFF@tubvm.cs.tu-berlin.de (Olaf Gerloff) writes: >In article <12052@hydra.Helsinki.FI>, luoto@cs.Helsinki.FI (Markku Luoto) says: >> >>I opened it once and the drive was a seagate... but how can you tell wether >>it's a mfm or something else ??? >> > >Hello Markku! > >If the drive was a Seagate it is very easy: Look at the drive type on the cover >If the last character was a digit, it was a MFM drive (e.g. ST 225, 20 MB >5 1/4 inch MFM drive). If the last character was a R, it was an RLL drive >(e.g. ST 238R, 5 1/4 inch 30 MB RLL drive). From the Seagate Catalog, page 27: none = ST412 MFM A = AT bus X = XT bus N = SCSI or SCSI-2 (SCSI-2 is downward compatible with SCSI). ND = Differential SCSI or SCSI-2 NM = Macintosh compatible SCSI V = NetWare ready R = ST412 RLL E = ESDI J = SMD-O/E or SMD-E (dual port) K = IPI-2 (dual port or enhanced dual port) S = synchronized spindle Probably more junk than ST owners need to know. But now if you see one in a surplus store, you'll know what you're up against: for example, there's essentially no hope of connecting an SMD drive to an ST. ND won't work without some different kinds of bidirectional buffers -- the "plain" SCSI is "single ended"; differential SCSI lets you have 10 meters of cable, single ended SCSI lets you have 3 meters (according to the standard, but on my Mac IIci, it craps out with about 2 or 2.5 meters total cable). NM might also be trouble on a typical Supra/ICD/Berkeley ST interface. -- vsnyder@jato.Jpl.Nasa.Gov ames!elroy!jato!vsnyder vsnyder@jato.uucp