![]() Grinding, clicking or other never before heard strange sounds coming from your hard drive, always requires Disk Utility > repair, SMART status bad, it's likely failing, especially if it's more than 5 years old or has been subjected to shock. Stable/fast Internet is required, preferably a Ethernet cable to your router, or if the modem, powered off/on to reset it.If you have a firmware password, that will have to be disabled first. Disconnect all other hardware from the problem Mac.If you have a wireless keyboard, you will need to use a wired/built-in one to perform the at boot commands. ![]()
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