Well, I'm not an expert on Macintosh troubleshooting, but Larry Pina's
The Dead Mac Scrolls says clearly that a "0000000F" code in the first
line under a dead Mac means the internal hard drive "has a bad driver
map, bad partition signature or bad directory block". As the drive has
been recently formated as Standard (which implies it is in HFS and not
HFS+), we can discard the partition signature and the directory block.
That leaves us only with the driver map, which is why I make my guess
about the driver being the culprit. Anyway, preparing a hard drive in
teh computer that is going to use it, if possible, is the best way to
make sure if will work without problem.
Many hard drive problems are related with SCSI termination or "black
magic". But if that were the case, the Mac simply wouldn't detect the
drive and display a disk with a question mark, or perhaps would lock up
just after showing the happy Mac. Anyway, if after booting with a boot
disk and opening an SCSI utility the drive remains invisible, it can be
some kind of SCSI problem...
Greetings,
Antonio Rodríguez (Grijan)
<ftp://grijan.cjb.net:21000/>
John Niven escribió:
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
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