From time to time something goes wrong with your Mac and you’ve got to do some maintanance to get things working again, perhaps you’ve lost your password and you want to boot from the install DVD to reset it.
The good thing about OSX is that this kind of thing doesn’t happen very often, which means any time you do have to do it, chances are like me you’ve forgotten all the keyboard shortcuts that allow you to control how the machine boots.
So, here’s a list!
Press keys immediately after you hear the startup tone:
- C – Boot from a CD or DVD (such as the Mac OS X Install disc)
- Option – Select a volume to boot from
- X – Force system to boot into OS X
- N – Attempt to start up from a compatible network server (NetBoot)
- Option-N –Start from a NetBoot server using the default boot image
- D A – Start Apple Hardware Test (AHT)
- Option-C-P-R-B –Reset non-volatile RAM (NVRAM)
- Shift –Start up in Safe Boot mode and temporarily disable login items
- C-V –Start up in Verbose mode
- C-S –Start up in Single-User mode
- T – Start up in FireWire Target Disk mode
- Eject, F12, or mouse button – Eject any removable media, such as an optical disc
Now, these are all options that work at boot time. If you’re interested in what looks like an exhaustive list of keyboard shortcuts, updated for OS X Mavericks – check out this post on HongKiat.com