It certainly should not take that many starts to get going. I'd say
there's a memory problem from what you describe... sounds like the OS
is running into the memory errors while it's loading, but sometimes
succeeds due to the random nature of the errors. Unfortunately, the
locations of the memory errors given by most tests aren't of any use in
locating the problem unless you're an Apple engineer who constructed
the memory system in these PowerMacs.
In this case, you can probably just start pulling/moving DIMMs until
you can get a full boot in 1 start; no need to run a memory test again
until you get that far. As you're working on it, check the numbers on
one of the little chips for each DIMM; if it ends with -7 or -70, I'd
suggest pulling those DIMMs first since they're usually older.
- Alan
On Aug 12, 2005, at 9:08 PM, David Elmo wrote:
Today, 15 starts. But Gauge Pro in a spare moment when I have a break,
has
come up with a memory error, which might explain all this nonsense
that has
been going on for so long. "Memory Error at address $01FF4AB4 but read
$05FF4AB4" I don't suppose anyone can say how i can usefully use this
notice
to pinpoint the chip concerned? If the following gets all unwrapped, I
am
sorry.
Memory overview
Disk cache: 8160K
Virtual memory: is off
Built-in memory: 832 MB
Location Size Memory type
B4 128 MB DIMM
A4 64 MB DIMM
B3 64 MB DIMM
A3 64 MB DIMM
B2 128 MB DIMM
A2 128 MB DIMM
B1 128 MB DIMM
A1 128 MB DIMM
External L2 cache: Not installed
David Elmo
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