andersom@spot.Colorado.EDU (Marc Anderson) (02/16/91)
Recently I purchased a miniscribe 3085 harddrive because my old 20 megger died on me... For some reason, the diagnostics software doesn't recognize my new drive. (RE-CAL errors/etc, when attempting to format it under the "other drives" menu... (giving the number of cylinders and stuff)) I'm running this on a pretty old 7300 (not 3b1).. Any ideas? Could it be my power supply? (can I use an external power supply or something?) thanks.... (if following up to this, could you also send your response in e-mail if possible? thanks a lot... [andersom@spot.Colorado.EDU]) -Marc
thad@public.BTR.COM (Thaddeus P. Floryan) (02/19/91)
In article <1991Feb15.202539.29865@csn.org> andersom@spot.Colorado.EDU (Marc Anderson) writes: andersom@spot.Colorado.EDU (Marc Anderson) in <1991Feb15.202539.29865@csn.org> writes: Recently I purchased a miniscribe 3085 harddrive because my old 20 megger died on me... For some reason, the diagnostics software doesn't recognize my new drive. (RE-CAL errors/etc, when attempting to format it under the "other drives" menu... (giving the number of cylinders and stuff)) I'm running this on a pretty old 7300 (not 3b1).. Any ideas? Could it be my power supply? (can I use an external power supply or something?) You cannot fully utilize a 3085 without also installing a WD2010 to replace the WD1010 disk controller chip, and you NEED the enhanced s4diag disk to properly format and prepare a disk for more than 1024 cylinders. The 3085 has 7 heads and 1170 cylinders. As previously posted, not all 3B1/UNIXPC systems will "take" a WD2010 chip until they have the "DRUN Patch" applied. The patch requires essentially changing one resistor and re-routing two signals; easy if one is not all- thumbs but NOT recommended if your idea of a soldering iron is a blowtorch or a 250W "gun"! :-) Now that we have "comp.sys.3b1", maybe I should repost it (the DRUN Patch) or send it off to Dave for inclusion in comp.sources.3b1 or to Lenny for archving at osu-cis; comments invited. As far as power supplies go, the 3085 is probably using LESS power than your old 20MB clunker, and I've successfully run a 3085 in a 7300 using the stock power supply for over two years now; it's the machine I bring to the users' group meetings. You may wish to verify/adjust the voltages if they're out of the range [5.25 -- 4.75] or [12.6 -- 11.4] for the +5 and +12 respectively; I prefer running at 5.1 and 12.2. Thad Floryan [ thad@btr.com (OR) {decwrl, mips, fernwood}!btr!thad ]