platt@emory.uucp (Dan Platt) (07/26/88)
Greetings! I have aquired an ST251 from a company who sent me a controller for an ST251R (which wouldn't work). Fortunantly, my controller that I drived the ST225 with also worked with the ST251. But that doesn't fix all the problems. 1) I purchased the ST251 to ADD to my disks; with the assumption that my new dual drive controller card would drive them both (the salesman said it would work --- was I a sucker?). They forgot the double connector J1 cable and sent a single connector cable. When I called technical support, they indicated that a) they sent the wrong disk with the controller (they should have sent an ST251R -- but I'm not complaining), b) that I'd need to swap the new disk for the old, c) that the controller card would only drive two IDENTICAL disks, and d) there may be a new controller out in a few months that could handle both disks. Well, my old controller drives the 251 so I don't need to swap (why didn't the tech support person mention this?) and it's installed and running. However, I'm still stuck with the issue at hand... So HERE IS THE QUESTION: Are the dual WD Controllers distributed with Seagate drives capable of driving two disks of different sizes simultaneously? or do they have to be the same model? Thanks in advance :-> Dan Platt
davidsen@steinmetz.ge.com (William E. Davidsen Jr) (07/26/88)
In an AT the controller will support two disk sizes (I have both clone
and true blue versions). In an XT I have no idea, the ROM BIOS on the
disk controller has four disk types it supports. Once you get booted you
can run a small program to install the 2nd disk, anyway. You set the #
of disks to two (I believe at 40:75) and point the int vector to the
disk parameter table, again from memory int 47.
Warning! I pulled the addresses out of my memory rather than the
computer's memory, they may be wrong.
--
bill davidsen (wedu@ge-crd.arpa)
{uunet | philabs | seismo}!steinmetz!crdos1!davidsen
"Stupidity, like virtue, is its own reward" -me