Set the number of partitions to one (1) from the Partitions drop down menu, click on Optionsbutton and select GUID, click on OK, then set the format type to MacOS Extended (Journaled), then click on the Applybutton. After Disk Utility loads select the hard drive entry from the left side list (out-dented entry - mfgr.'s ID and drive size.) Click on the Partitiontab in the Disk Utility main window. When the menu bar appears select Disk Utility from the Utilities' menu. After the installer loads select your language and click on the Continuebutton.

Release the key when you see a small spinning gear appear below the dark gray Apple logo.

After the chime press and hold down the ' C' key. Insert the disc into the optical drive and restart the computer.

Boot the computer using the Snow Leopard Installer Disc or the Disc 1 that came with your computer.

Factory reset of your Mac - Apple Supportįollow these instructions until you get to Step 5 of Factory reset of your Mac - Apple Support. At Step 5 you will need a Snow Leopard DVD or the installer disc that came with the computer.

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 Support then boot the computer into Safe Mode. Disconnect any third-party peripherals including any USB hubs.

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