>At the end Umax shipped quite a few S900s with UW drives on SCSI bus
>0. They put the UW drive on the end of the SCSI cable, enabled
>termination on the drive, and used a 50 pin to 68 pin adapter.
That describes the setup of my Pulsar with an IBM 4 gig upside down
in bay six with a scsi id of 6 when I first bought it for rather large
dosh compared to the prices now.
Now it has a 2gig UW at id 0, 9gig UW at 1, 24x cd at id 3 and a
cdrw at 4. The 2 gig has two volumes, the 9 gig has two volumes (one for
9.1 and one with OSX on it) and the 4 gig (still the boot and still
upside down in 6) has just one with 9.1
>Hi-
>
>I'm a long-time lurker here (since digest #67) and I have a question
>I can't recall being answered here before: Can a 68-Pin Ultra Fast
>Wide SCSI HD be used as a boot drive on the S900's bus 0? Is there
>an alternative way of saying "68-Pin Ultra Fast Wide SCSI"? I'm
>having trouble finding information on this standard on the Web.
>(Hope this doesn't open too large a can of worms.)
Any scsi HD can be used as the boot drive - or any volume of any HD
as long as it's supported by HD Setup - it can be a terrible hassle if
unsupported even if you use a third party app to initialise it. My 2 gig
is initialised with HD SpeedTools and when I pressed the cuda recently to
seat a pci card and processor I lost whatever it was that enabled it to
mount and had to use volume recover. Bit of a puzzler....
I have seven 'spare' HD's but the specs vary considerably - some are
68 pin and some are 80 pin - some have active termination some do not and
require termination on the adapter - the jumper sizes also vary widely so
you need a variety of fits. My two 80 pin adapters (one low profile with
termination and not recommended for drives over 4 gig) are so bulky that
it's impossible to put two 80's in bays 3 and 4 of the Pulsar so they're
squeezed (and I mean squeezed) into my 8500 as the 8500 bays are not wide
enough for the 68/50 pin adapters - who designed it? Rubik?
I must admit to still being puzzled by some aspects of scsi - I
don't recall ever seeing an 80 pin controller or cable for a mac - are
all pci controllers 68 pin? Seems a pity as the 80 pin connectors are
definitely the tidiest of the lot....
Pete in the UK
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