Darren,
I step back, take a deep breath........
The 7300 has a SCSI disk and a CDROM. I don't know this machine but in
other cases the last device on the internal bus has been the CDROM,
which provided the termination and power for that chain. Either that or
the cable has a separate terminator on the end. That means that the
hard drive must NOT have its termination activated.
So since I don't know for sure, I would not assume that the drive is
correctly setup for it's new life. That's why I personally would have
checked all the jumpers to make sure the setup is correct.
Ever heard of the black art of "SCSI magic"? Well that's just bullshit
from non-technical guys who don't understand transmission line theory.
Sometimes an incorrect setup can still work. This leads to false
conclusions.
OS 6 can still co-exist with latter OS on the same drive, so I'm not
totally convinced by your suggestion that the drivers are to blame. I
would worry about the fact that a PowerComputing tower was involved at
some point. I really know nothing about these. They may have modified
the drivers.
Finally, are we sure that the error codes given indicate a hard drive
problem?
I say re-seat the ram first, but check those jumpers! Best performance
can only be guaranteed by correct jumper settings. Maybe you should
check yours also.
John
On Jul 29, 2005, at 4:05 PM, Darren wrote:
John Niven wrote:
SCSI Mac hard drives need to be non-parity. But termination is
probably the most critical thing.
Why, if a drive comes from one mac as a boot disk and is inserted into
another mac as a boot disk would you even consider jumpers and
termination? Same setup but the 7300's drive was swapped into a Quadra
running 7.1. works well thank you.
The 7300 was shipped with 7.5 on a 2 gig drive, so I'm guessing thats
all good.
You zero the drive to remove the mac driver partition and any other
rubbush going up to OS8 added then your install of 7.5 will boot,
simple enough for this list I hope.
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