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spin498

macrumors member
Original poster
Don't know if this is just coincidental. Finally got 10.11.5 to run on my Mac Pro 1,1. During the process I'd been rebooting my system several times until I got the right boot.efi to run. Prior to updating from 10.11.3 I had been ripping my CD collection, without issue. After the update, every 3rd closing of the SuperDrive caused the system to reboot.

What I am wondering is, is this a SuperDrive issue, a PSU issue, or a software issue? The CD ripping is the most use the SuperDrive has had in years and I was ripping about 6 discs a day.
 
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