Startup Keys

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Modern (Intel) Macs

NOTE: Macs with a firmware password will not allow booting from a different volume without password. They will not PRAM.

Recovery:

Macs upgraded to macOS 10.12.4 or later:

  • Option + Command + R: Start up from latest internet recovery compatible with your Mac.
  • Shift + Option + Command + R: Start up from internet recovery closest to original macOS that came with your Mac.

Macs not upgraded to macOS 10.12.4 or later:

  • Option + Command + R: Start up from internet recovery closest to original macOS that came with your Mac.

Resets:

  • Option + Command + P + R: Reset NVRAM/PRAM. This will reset screen brightness, volume, default boot drive to first available storage device (usually internal HDD/SSD), Bluetooth/WiFi settings, Find My [Mac] token, display resolution, and Gpu selection.

SMC Reset:

  • Left Control + Left Option + Right Shift + Power (7-45 seconds) - For Notebooks with T2 Chip
  • Left Shift + Left Control + Left Option + Power -For Notebooks with non-removable battery and no T2
  • All others - Discharge machine

Diagnostic: