I am not sure how the bad ram does it's meanness and I am not sure it is 
your problem. My guess is that the ram is accessed at some point in the 
startup or it has corrupted other things. Each time I had this it took 
me months of work to get to the problem. I eventually would put each 
module in buy it's self and try the computer. If it works with one and 
not the other RAM then you have it located. I have also, had bad hard 
drives cause boot problems.

I sujested a RAM problem because RAM that works on OS 9 may not pass the 
stiffer demand of OS X (and I have had this happen). If it was a drive 
it would fail any OS. Your problem nags me because I think I have read 
of this problem and a fix for it (unrelated to RAM trouble) but cannot 
recall any more than that (looks as though I have my own bad memory 
problem;).

I never had startup trouble or even a bad hard drive on a Mac until my 
hard drives were larger than 2 gigs and the OS was 8.5 and higher. The 
bigger, faster, cheaper drives come at a price.  And even though System 
7x didn't have startup problems it was buggy as hell. We always live in 
troubled times; But the troubles change.

I found the bad Sonnett buy getting a 7600 working well with a 233 604e 
and then putting the Sonnett in. Boom, it went south.

The Bad news on the Sonnett was that it was in a 8500 for years before 
going bad. I worked on the 8500's problems for months without a cure. I 
finally pitched the 8500 thinking the motherboard was bad. I had even 
pitched a couple drives I had replaced trying to fix it. There was 
nothing wrong with the 8500 or the older drives.

Roger

Rik Gresham wrote:
> That is unpleasant news; I have degraded the amount of RAM that I run 
> with just for compatibility's sake; currently standing at two matched 
> 128's and another 128 that have stood thousands (literally) of passes 
> of test with no problems instead of over 600 with some concerns.  How 
> could bad main memory affect the startup disk settings when they are 
> enacted by the PRAM, just wondering?
> 
>   I could spell out the roms of a C=64 but the internal maps of a Mac 
> are still a mystery, even after 16 years.
> 
> Questioning,
> Rik
> 
> On Tuesday, Dec 3, 2002, at 22:28 US/Central, Roger Harris wrote:
> 
> 
>>As in; Bad RAM moduals.
>>
> 
> 
> 


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