c152-ce@cory.Berkeley.EDU (Rob Pfile) (02/11/89)
Recently, I purchased a Quantum Pro80S for my Mac II to replace my
40 Meg internal Q250. Since my dad needed more storage for his Mac at home,
I packaged the disk in a Tulin Apple Hive, formatted it at a 3:1 interleave
with Apple HD Setup, and shipped it to him.
He received it yesterday, and it will not boot, although it worked great
attached to my Mac II thru the external SCSI port.
The configuration is: Mac 512KE/new clock chip + Dove 1MB mem upgrade/SCSI port
attached to an Apple HD20SC, then to the HD40SC.
He says it wont boot even if the HD40SC is the only device connected.
The HD20SC is set to address 5, the HD40SC to addr 0.
Questions:
1) I suspect that this configuration is not terminated properly. Right now
he only has one terminator, which I believe should go between the HD20 and
the HD40, no? Is it possible that we need to terminate the HD40, too?
(I know that this information is documented, but I dont have my Apple SCSI
manual)
2) Is there a possibility that the Dove boards have problems addressing
SCSI device 0? Might the Dove hardware want the devices to be consecutively
numbered?
3) I wanted to set the HD40SC to be device 6 so that even without a Startup
Device CDEV the 40Meg device would boot first. However, I do not have
specs on the q250, aka HD40SC. Does anyone know the jumper pinout for
this disk? Is this disk internally terminated?
Any other suggestions? Anyone there from Dove care to comment?
A hack that I tried was to have him boot the HD20 by turning off the HD40.
We found that the HD40 had to be disconnected, too. I then had him bring
up Paul Mercer's SCSI tools CDEV, connect and turn on the HD40, update the
bus status, and mount the disk. This worked for a second, but after an
HD40 Disk access, the machine froze. Also, on subsequent tries, sometimes
the bus status would indicate that the HD20 was gone from the bus on update.
With the whole mess hooked up (mac - hd20 - terminator - hd40) the mac
will not boot at all.
Does this sound like bus ringing, or what?
We need help on this one. He runs a small business and needs the
storage. Thanks.
Rob Pfile
c152-ce@cory.berkeley.edu
...!{ucbvax!cory | cory}!c152-cets@cup.portal.com (Tim W Smith) (02/12/89)
First thing to do is check termination. Another thing to try is to reverse the physical order of the drives on the bus. If one is terminated and one isn't, this may get the terminated one to the correct position. If you are sure termination is correct and it still doesn't work, try calling Dove. Their tech support number is toll free, so what have you got to lose? It's doubtful that anyone from Dove will comment on the net about this, since they are not on the net. An employee of the company that writes most of Dove's network software is on the net ( me ), but he knows nothing about most of their non-network products. Tim Smith "I still dream of Organon. I wake up crying" -- Kate Bush