Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!killer!ames!ncar!husc6!psuvax1!psuhcx!wcf From: wcf@psuhcx.psu.edu (Bill Fenner) Newsgroups: comp.sys.ibm.pc Subject: Hard drive / controller problems Message-ID: <222@psuhcx.psu.edu> Date: 11 Jul 88 17:24:09 GMT Sender: wcf@psuhcx.psu.edu Reply-To: wcf@psuhcx.psu.edu (Bill Fenner) Organization: Penn State University Engineering Computer Lab Lines: 56 All right, y'all, I've got a problem for someone who's smarter than I to solve. I have, at this moment, an IBM full-ht. 10 meg drive and controller in my cheap snap-together clone. :-) The controller has no identifying marks other than IBM and a serial number. It has no jumpers that are accesible (it has spots for jumpers but there are no pins, just holes in the board filled with solder. I didn't feel like trying any of them.) The drive says Model No: WD12 on it, so I get the feeling that it's a Western Digital drive with IBM's name on it, so that may be the case with the controller, although the controller doesn't seem to have a controller in rom at any of the usual addresses. Of course, no, I don't have any documentation with it. Now the problem. I just bought a second drive, an ST212. It works fine as drive C, it formats correctly and everything, boots up faster and quieter than the IBM drive, etc. But, the 2 drives will NOT work together. I have tried so many things... C and D indicate middle and end of the (twisted) 34-pin cable, c and d indicate the c and d 20 pin drive connectors. DSx indicates that drive select x is active on whatever drive, and (T) indicates the terminating resistor. IBM Cc DS1 ST212 Dd DS1 (T) With this combination, both hard drives are accessed right after it tries for the floppy. (both at once.) and it says "Boot disk failure. Press any key to retry." IBM Cc DS1 ST212 Dd DS2 (T) Like this, before (yes, before) it goes to the floppy, it lights the HD light for about a minute on the ST212, then goes and boots fine but ignores drive D. IBM Dd DS1 (T) same as above, except there's no drive C for it to access so it just hangs. If you switch the IBM and the ST212 around, it does no good. oh, one other thing IBM Cd DS1 (T) works fine. so I tried IBM Cd DS1 ST212 Dc DS1 and this does the same as the last 2. I am starting to think that it's my controller. I haven't managed to find someone who is wwilling to lend me their controller yet, so I can't test this assumption, but everyone I ask tells me that it should work. It's not the 34 pin cable, I've tried 2 different ones and they did the same thing. Please respond via E-mail, I'll summarize if anything interesting comes along.