These models shipped with Software Restore disks when new.Ī. Selection B is for Macs that came originally with Snow Leopard or earlier. These models had no disks included when new. Selection A should be used on computers that came with Lion or later when factory new. Follow this outline to reset the computer to the factory-new state: If you must to resolve the problem erase the disk and reinstall macOS. If you have no success figuring what is happening then you may need to examine the software you have running when the panics occur. Read the kernel panic log: Mac OS X- How to log a kernel panic. Kernel panics are indicative of possible hardware failure, so you should Check your Mac with hardware diagnostics or AHT. See Diagnosing problems- crash, freeze, panic, or spinning beach ball?, Don’t Panic! Understanding & Troubleshooting Kernel Panics in macOS, and How to fix kernel panics after installing OS X updates | MacIssues. Use safe mode to isolate issues with your Mac - Apple Supportthen boot the computer into Safe Mode. Disconnect any third-party peripherals including any USB hubs.
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