At Step 5 you will need a Snow Leopard DVD or the installer disc that came with the computer. Factory reset of your Mac - Apple Supportįollow these instructions until you get to Step 5 of Factory reset of your Mac - Apple Support. 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. If a question mark appears after you install a software update, select your startup disk again using macOS Recovery. If you still see a question mark after waiting a few seconds, use Startup Manager to start up your Mac, then select your startup disk from System Preferences. Wait a few seconds to see if your Mac is able to locate the startup disk you specified. This can happen if the disk selected in the Startup Disk pane of System Preferences isn't available. If you see a folder with a question mark appear instead of the Apple logo, it means your Mac couldn't find a local or network-based startup disk. You do not have a valid copy of macOS installed.
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