2016-11-01

MacOS - PRAM Reset

  1. Turn the mac off.
  2. Unplug it for ~20 seconds.
  3. Plug it back (wall power supply).
  4. Press 4 keys simultaneously, for 10 seconds, then release
    1. left ALT OPTION
    2. left COMMAND
    3. the letter P
    4. the letter R



This works at least on a mac book pro.

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