Not all these functions work with every version of Mac OS X or with every hardware upgrade, but they are the most common. Force eject (CD/DVD): Click Mouse Button and Hold.Boot to open firmware: Command + Option + O + F.Reset PRAM: Command + Option + P + R (Note: Hold until second chime).Hard Drive or External Hard Drive compatibility with both Mac and Windows. But before you see the method on how to format the drive to NTFS on Mac, lets see some common reasons why people do it in the first place. Target disk mode: T (Note: Only for FireWire Macs) If you are a Mac user and wondering if you can format drives to NTFS on MAC, then the good news is that you can do it.Safe-boot mode: Shift (Note: Disables nonessential and login applications).Boot to external hard drive: Command + Option + Shift + Delete.The following key combinations can be held as your Mac is powering on: While you cannot run any code from Terminal or otherwise to set an order of boot devices, you can easily control where your Mac boots via keyboard commands. The following is a more comprehensive list of the keyboard commands you know and many you may not.Ī recent tweet from reminded me of several boot commands I've learned over the years, so I thought a more comprehensive list would be useful for MacFixIt readers. Many users are aware of some boot commands for Mac OS X that provide different functionality for your system.

Mac terminal commands external drive