For some reason I can't fathom, the machine couldn't find the OS from which to boot. Then the dreaded flashing grey folder with a question mark appeared. At switch-on, I got the startup chime, then a pale grey screen, but no mouse pointer or keyboard interaction possible. Unfortunately, today the problem repeated itself but worse. ?Īll and any thoughts gratefully received. So, all in all - and unless the problem recurs - something of a mystery. When I re-connected it and re-booted, I did a PRAM re-set for good measure. Very little dust came out, but I'm glad I made sure. I felt that the air coming out of the back of the case was a bit warm for a machine that was just idling, so I disconnected everything, took it away to a clean space and gave it a thorough dust-removal (as thorough as one can be without actually removing the CPU heatsinks). I ran Onyx to check the startup disk and repair permissions etc., and it didn't find anything amiss.ĭid a re-start and it booted normally - the dark grey screen appeared and the login box was visible.
I sussed that this was where the password entry field should be, so I typed in my password and hit return. I then found out that when I hovered my mouse over the central portion of the blank screen, there was a small area where the pointer turned into a typing cursor. My mouse pointer was visible on the screen and movable, and when I hit the "Open CD tray" button on the keyboard, it worked - so it was clear that the mouse and keyboard were working normally and interacting with the machine. This morning, when the pale grey screen disappeared, it re-appeared as pale grey and was just empty - no login box visible. Normally, what happens next is that when the progress bar gets to a certain point the screen disappears and comes back again, the progress bar completes and the pale grey screen gives way to a dark grey one, in the middle of which I see the OSX login box. The usual pale grey screen appeared, with the Apple logo and the dark grey progress bar under it. This morning I switched on my Early 2008 Mac Pro (running El Cap off an SSD - see hardware spec in my side panel) and something odd happened during the boot process. Important: Mac Pro must be turned off before swapping the drives.I wasn't sure whether to post this in the desktop hardware section or as an OS-related query (because I don't know where the root of the problem lies), but here goes. A true convenience and improvement for the power user.
Once mounted on the Pro Sled you can swap them, store them or take them with you – they will plug directly into the Mac Pro main logic board.
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