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  • Keep this with MAC PRO 2




  • I have a 2010 iMac 2.93 i7 with 16 gig of ram and a terabyte hard drive. I upgraded to the new OS and my computer has been shutting itself off after the upgrade. I’ve used Disk Warrior and Onyx thinking maybe something was out of place but it still does it. The 16 gig of ram is also new but it was after I did the OS thing that this started happening. My computer was on the list for being able to upgrade so not sure what’s going on. Maybe you can help me figure what to do next?




    • The first thing to try is to restart from the Recovery HD partition. The easiest way to do that is to start up while holding down the Command-R keys. If this works it will give you access to Disk Utility, with which you can repair your main boot drive.

      If Disk Utility doesn’t do the trick, there are three standard startup routines to try. First restart in Safe Mode by holding down the Shift key when you hear the startup chime; hold it down until you see Safe Mode under the startup progress bar or until you reach the login window. If that doesn’t work, reset the NVRAM on your Mac: Restart and immediately hold down the Command-Option-P and R keys; hold them until you’ve heard the startup chime at least once. Then release them. If that doesn’t help, reset the Power Management Controller (SMC). For directions for your specific Mac check the Apple Support Article at https://support.apple.com/en-us/HT201295. In the otherworld article linked above they suggest removing the battery in a laptop but that’s no longer necessary in most cases. I expect resetting the SMC is the most likely to help with this problem, but it won’t hurt to run them all.

      If none of these routines solves the problem, you can contact Apple Support at 800-275-2273. Though the Mac is out of warrantee, the OS is not so they should at least listen to your problem. They did for me when I called them up with a Sierra issue a few days ago—and they found a solution.

      As a last resort you may need to restore your system from backup—hopefully you have one, either a recent clone or from Time Machine. You can restore from Time Machine in Recovery Mode, if that’s the only backup you have. Good luck.

      Lastly, iMacs have been known to have this problem from time to time, as have other Mac models. There are several possible repair solutions, including replacing the power unit, but they may cost more than the iMac is worth. While you can do the repair yourself, the trickiest part is replacing the thermal paste properly. Indeed some iMacs didn’t have the problem until they were opened up for an upgraid and the screen was not properly reset, leading to a heat sensor malfunctioning.

      That said, an OS upgrade should not affect the hardware beyond the reach of the repair routines mentioned above.




    • Like, completely shutting off by itself? That sounds like a hardware issue. Do you know how to open Console and look at the system logs to see what the last things happening were before a crash?




  • Hi, I have a Mid 2011 iMac and I’m still running El Cap 10.11.6 . I’ve been reluctant to upgrade to a newer OS. Do you think I’m being overly cautious?




    • No. I’ve found Sierra to be stable if you want to upgrade to macOS 10.12. But El Capitan is still supported by Apple so you will get any available security updates for another year. As for upgrading to High Sierra, it depends on what kind of Mac you have. If you have a Mac laptop with the original SSD, the upgrade should work OK. Be aware, though, that the upgrade will take more than the usual amount of time to run because it will be changing the file system from HFS+ to APFS. This will not happen automatically on a Mac with a Fusion Drive or a standard hard drive.

      You should not under any circumstances upgrade to macOS 10.13, or any other OS, unless you have a current backup of your entire boot drive, either a clone or with Time Machine, so you can restore your system if something goes wrong. Anyone who upgrades without a backup is just begging for trouble.




    • Sierra works fine on my 2011 MBP. Just waiting to confirm the latest update for HS has fixed issues with Adobe CC and a couple other things before pulling the trigger, but it should also be fine if not better than Sierra I would assume.




  • It’s really annoying you can’t disable Photos face scanning. That’s a “feature” I don’t want and I don’t like, and I resent the computational load it places on the computer.