The Mac Admin's Blog

Few special key commands while start up. This can be of great use while troubleshooting start up issues in Mac. Action/Explanation Keystroke Eject CD on boot Hold Mouse button down immediately after powering on OS X Safe boot Press Shift during startup Start up in FireWire Target Disk mode Press T during startup Startup from a CD Press C during startup Bypass primary startup volume and seek a different startup volume Press Cmd-Opt-Shift-Delete during startup Choose Startup disk before booting Press Option during startup Start up in Verbose mode Press Cmd-V during startup Start up in Single-User mode (command line) Press Cmd-S during startup Force Powerbook screen reset Press R during startup Force OS X startup Press X during startup

For all OSX & OSX Servers Starting a Mac machine in Verbose or Single user mode is generally user for troubleshooting and Software Development. I am publishing a seperate article on this because in many of the troubeshooting steps that I have asked you to start your Mac in Verbose mode or single user mode in my last articles. Process to start in these modes: You need to shut down the machine, for new users I would like to add that you if in case you need to do a hard reboot of your machine, please keep the power button pressed for more that six seconds, reason being Mac goes in sleep mode if you press the power button for 3 seconds and you will never know if your Mac is completely turned off is just sleeping. After starting the machine, press Apple key and one of the v/s keys in combination. Here ' v' will take you to Verbose mode and ' s' will take you to Single user mode. To Exit from Verbose and Single user mode: You need to type reboot while exiting from Sing