![]() If it were unsuccessful, you'd then see either a circle with a slash or a 'folder with a question mark'. If it weren't there, the Mac would first look at all other bootable drives (internal hard drives, DVD, USB, network). It is stored on a hidden GUID partition on all bootable hard drives, the exact whereabouts are stored in the Macs PRAM by the 'Start volume' preference pane or the Boot Camp assistant. Light grey display: Now the Mac flicks on its display and looks for the 'Boot.efi' boot loader.If everything is okay, the startup chime is heard. ![]() If you see a slowly pulsing LED or hear beeps every five seconds, you have a RAM problem. processor, RAM, LAN + WLAN, Firewire, USB). Power on - startup chime: During the Power-On Self Test the hardware on yor Macs motherboard is tested (i.e. ![]()
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