nyount@secola.Columbia.NCR.COM (Nelson Yount) (09/18/90)
Does anyone out there know if it is possible to install an IDE drive and controller and an MFM drive and controller in the same system? My situation is this: My 286 system came with a WD 40MB IDE drive. I recently obtained a used 32MB MFM drive that I would like to add, and borrowed an MFM controller to see if I could get it to work. By strapping the MFM controller as the secondary hard drive controller, and by trial-and-error strapping of the IDE controller, I finally got the two controllers to coexist without causing a boot failure. But when I add the new drive 1 through setup, I get a drive 1 failure at boot time, as if the system is looking for drive 1 through the IDE controller and doesn't find it. I know that the new drive and controller both work because I tried them alone in the system without the IDE drive. By the way, I have an AMI BIOS and am running MS-DOS 3.3. Is there something else I need to do to specify that drive 1 is to be accessed through the MFM controller, or is this configuration just impossible? A second question: The MFM drive has 8 heads and 512 cylinders. The closest drive type to this is type 7, with 8 heads and 462 cylinders. I've heard that type 47 could be used to specify a user-defined drive type, allowing you to directly specify the number of heads and cylinders. But setup just takes 47 and I'm never asked to provide this information. Is there really a user defined drive type, and how is it used? Nelson Yount nyount@secola.Columbia.NCR.COM NCR Corp. NPD-Columbia
ill@uni-paderborn.de (Markus Illenseer) (09/25/90)
nyount@secola.Columbia.NCR.COM (Nelson Yount) writes: >Does anyone out there know if it is possible to install an IDE drive and >controller and an MFM drive and controller in the same system? [stuff deleted] >Nelson Yount nyount@secola.Columbia.NCR.COM >NCR Corp. >NPD-Columbia Never heard about this. The only Idea I have is to jumper the IDE drive as master drive. (All IDE drives can be jumpered as master and as slave drive.) CU, Markus ******************************************************************************** Markus Illenseer I'm sorry Dave, I'm afraid, I can't do that. 4790 Paderborn ,United Germany Email: ill@uni-paderborn.de ********************************************************************************
srm@dimacs.rutgers.edu (Scott R. Myers) (09/26/90)
In article <1990Sep24.190445.3643@uni-paderborn.de> ill@uni-paderborn.de (Markus Illenseer) writes: > nyount@secola.Columbia.NCR.COM (Nelson Yount) writes: > > > >Does anyone out there know if it is possible to install an IDE drive and > >controller and an MFM drive and controller in the same system? > [stuff deleted] > >Nelson Yount nyount@secola.Columbia.NCR.COM > >NCR Corp. > >NPD-Columbia > > Never heard about this. The only Idea I have is to jumper the IDE drive as > master drive. (All IDE drives can be jumpered as master and as slave drive.) > CU, Markus I have an IDE controller card that will work as a secondary controller with anything else as a primary. It has an onboard BIOS to provide the info to DOS about its existence. I now have it running as a primary with no problems. In the next week or so I will be dropping in an ESDI controller as primary and testing it out. The controller is made be Silicon Valley Computer. I don't have there number on me but if you're interested send me E-mail and I'll get it for you. Hope this helps... srm -- Scott R. Myers Snail: 26 Stiles Street Phone:(201)882-3100 Apartment 18 Elizabeth, NJ 07201 Arpa: srm@dimacs.rutgers.edu Uucp: ..!dimacs!srm "... No matter where you go, there you are ..."
kleonard@gvlv1.gvl.unisys.com (Ken Leonard) (09/26/90)
In article <1990Sep24.190445.3643@uni-paderborn.de> ill@uni-paderborn.de (Markus Illenseer) writes:
* [deleted]
* master drive. (All IDE drives can be jumpered as master and as slave drive.)
-------
What do the terms "master" and "slave" mean for IDE?
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regardz,
Kensrm@dimacs.rutgers.edu (Scott R. Myers) (09/27/90)
In article <965@gvlv2.GVL.Unisys.COM> kleonard@gvlv1.gvl.unisys.com (Ken Leonard) writes: > In article <1990Sep24.190445.3643@uni-paderborn.de> ill@uni-paderborn.de (Markus Illenseer) writes: > * [deleted] > * master drive. (All IDE drives can be jumpered as master and as slave drive.) > ------- > What do the terms "master" and "slave" mean for IDE? > ------------ Well in my experience with IDE so far I think it just simply states the Drive Number not much different than other drive types. Usually on other drives you would set the drive number for 1 or 2 to specify which drive it is on the controller. Or more commonly with PC based systems both drives are set for 2(???) and there is a twist in the data cable that inverts the signal for one of the drives to look like a drive 1. IDE is the same as far as I know. They just change the wording and there is no twisted in the cable. Hope this helps... srm -- Scott R. Myers Snail: 26 Stiles Street Phone:(201)882-3100 Apartment 18 Elizabeth, NJ 07201 Arpa: srm@dimacs.rutgers.edu Uucp: ..!dimacs!srm "... No matter where you go, there you are ..."
ill@uni-paderborn.de (Markus Illenseer) (09/28/90)
kleonard@gvlv1.gvl.unisys.com (Ken Leonard) writes: >In article <1990Sep24.190445.3643@uni-paderborn.de> ill@uni-paderborn.de (Markus Illenseer) writes: >* [deleted] >* master drive. (All IDE drives can be jumpered as master and as slave drive.) >------- >What do the terms "master" and "slave" mean for IDE? >------------ >regardz, >Ken Hi Ken! Yo! This is an interessting thing! Allmost all IDE-Drives have jumpers on to jumper them as master and slave. Master is the drive on wich the controller is working. The slave drive is this one which controller is dis- abled. In other words: IDE drives have their controller already included (embedded). So if you connect two drives, you only need one controller. With these jumpers, you can enable or disable the controller. If you connect two drives you have to look wich controller you like to enable. Sometimes you must enable the slowest controller, because the seek-time can not be increased just because you use a new controller. The Master-Slave ratio is something like (in easy way) the ID's on normal MFM or RLL Drives. (ID 0 for first, ID 1 for second drive). You have to jumper the drives, because you can't run both controllers at the same time (say with another, second IDE-Hostadaptor). In AT with Setup, you sometimes have problems with user-defined types. Check out first, when you buy new drive. Hope this help you, and others ! CU, Markus ******************************************************************************** Markus Illenseer I'm sorry Dave, I'm afraid, I can't do that. 4790 Paderborn ,United Germany Email: ill@uni-paderborn.de ********************************************************************************
scjones@thor.UUCP (Larry Jones) (09/29/90)
In article <965@gvlv2.GVL.Unisys.COM>, kleonard@gvlv1.gvl.unisys.com (Ken Leonard) writes: > In article <1990Sep24.190445.3643@uni-paderborn.de> ill@uni-paderborn.de (Markus Illenseer) writes: > * [deleted] > * master drive. (All IDE drives can be jumpered as master and as slave drive.) > ------- > What do the terms "master" and "slave" mean for IDE? IDE drives contain an integral disk controller which is the equivalent of a normal disk controller. Most can support 2 drives and most systems only support one controller, so you set your second drive to "slave" to disable its controller (that you had to buy since it's integral) and use the controller on the "master" drive instead. ---- Larry Jones UUCP: uunet!sdrc!thor!scjones SDRC scjones@thor.UUCP 2000 Eastman Dr. BIX: ltl Milford, OH 45150-2789 AT&T: (513) 576-2070 You don't get to be Mom if you can't fix everything just right. -- Calvin