Upgrading about 6 months ago to SSDs and other kit to run MacOS on RAID 0 at SATA 3 rates I was not ready to throw in the towel by further upgrading. Having very similar problems I followed the actions of Moleyman69 very closely, and suffered almost identical outcomes. If anyone has any ideas or advice that would be great.
So I think that the RAM is probably OK.Īre there any logs that might help me try and work out why the machine randomly locks up? So, I swapped all the DIMMs around so that they were all if different slots - I even then put the memory risers back in different positions and then ran the same Memtest for another 24 hours and got the same results (no errors, but 1 ECC correctable error). I wondered if it might be memory-related so I made a bootable Memtestx86 v5 USB stick and ran it for about 24 hours during which time Memtest ran about 12 or 13 complete cycles with no errors found (it did say that there had been 1 ECC correctable error though). Also, I have had the machine lock up completely a few times when shutting the Mac down - I get the grey screen with the normal spinning "thing" (not the beach ball) and then the spinning thing just freezes and I have to do the seven second power-off. It seems to only happen after the Mac has been woken from sleep too - but it doesn't happen every time though it seems to be completely random. What happens is that the machine appears to be completely stable after boot-up.
#Macdown keeps crashing install
So, after much searching (and some incredible luck) I managed to find my original 10.8.3 installer so I did a complete clean install of 10.8.3 and then applied the combo update to get me to 10.8.4 - so I was back where I was when I wasn't having these hard crashes. However, after I upgraded to 10.8.5 I started to experience total crashes (machine completely locked up, mouse wouldn't move, clock in corner not changing) and the only way to restart was to hold the power button in for seven seconds. The set-up has been running fine for years without much issue. I have a MacPro 3,1 running 10.8.4 with a flashed-to-be-a-EVGA-Mac-GTX680, 8 GB RAM (2 x 2GB and 4 x 1GB).
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