I took out and cleaned everything as follows with compressed air / brush and put back together I was careful to not erase the restore partition (at least I think so) So far I have erased the 'SSDBOOT' partition I had on the OWC SSD - so that I could reinstall Yosemite fresh, in the middle of downloading Yosemite again (!) - it crashed and then the above issues started.
I need to hunt around for the latest pre-download installer I have. Mac OSX Lion installer) - it sounds like it runs up, reads for a good few minutes and then stops. If I try holding down Cmd (apple) + R - it does the same. Might be able to get a mac edition card via work or ebay to see what the hell is going on - but it will take a few days. I don't get a boot screen due to using non Mac Graphics card (no EFI64 right?) - my old Nvidia 8800GT went bang about a year ago, it was always flaky!). (BTW found an awesome mac pro 3,1 service manual with good instructions - link Then HDD spin up and them 'click' system powers down. So it powers up - no RAM leds on, no diagnostic leds on on motherboard showing any errors. Unplugged them to troubleshoot what is going on elsewhere. Usually run 2 x 750Gb SATA disks in bay 3 and 4 - RAID 1 software - with all my data on and also back it up using superduper to an external WD 1TB firewire 800 drive. OWC Mercury 120Gb SSD (Bay 2) - BOOT DRIVEĥ00Gb SATA HDD (Bay 1) - non critical data drive Mac Pro 3,1 - Early 2008 (owned from new) So got nervous - backed up all my data again (650Gb) and also made a cloned image of my boot drive. I have run into a big problem with my beloved 3,1 MP - started having issues about a week ago with some hanging, slow shutdowns and other random errors. I'll apologise upfront this is a bit of a long one.
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