boot option keyboard combinations

press and hold these during boot.

  • command-s

    • single-user mode

  • command-v

    • verbose mode

  • shift

    • safe mode

    • DON’T press until the tone is heard. then hold til the apple icon and spinning cursor appear.

  • C

    • boot from a cdrom or dvdrom

  • D

    • force boot from internal disk

  • command + option + P + R

    • zap the pram

  • command

    • disable virtual memory

  • mouse button

    • eject cdrom

  • option

    • select boot disk

  • T

    • fireware target disk mode

  • N

    • boot from network