Currently Being ModeratedJan 9, 2013 6:14 PM (in response to nfarlow)
Reset NVRAM which stores the startup disk information.
Hold down shift+command+P+R while booting. Hold this through at least two chimes, and then release. Immediately hold the Option key down to get to the Startup Manager.
Currently Being ModeratedJan 9, 2013 8:09 PM (in response to VikingOSX)
Thanks for trying again, but that didn't work either. It didn't chime twice, it just went back to trying to start Windows.
Out of desperation I called Apple tech support, paid $19.95 and spent an hour on the phone. Now I'm back up and running OSX. It seems you have to wait until AFTER the chime to hold down the Option key. THEN you get to a screen that allows you to choose the startup disk. But the rep had me try all sorts of stuff before he provided that little tidbit.
Now, four hours later, I'm $20 poorer and back to square one. Except for the fact that I have deleted my Windows partition. I'm done with that nonsense. I'll stick to OSX on my Mac from now on.
What a horrible night this has been...
Currently Being ModeratedJan 10, 2013 5:06 AM (in response to nfarlow)
Glad you are back up and running.
There were two steps to the instructions I gave earlier about resetting the NVRAM.
- Boot with shift+command+P+R keys depressed. Apple recommends doing this through two chime cycles.
- Release shift+command+P+R keys and hold down option key until Startup Manager screen appears.
Step 2 implies that the second chime has occurred, a third reboot is in progress, and now only the option key should be pressed. It was clear to me, but perhaps insufficiently communicated to you.
Currently Being ModeratedJan 10, 2013 7:20 AM (in response to VikingOSX)
I understood what you said, but it didn't work. Unfortunately I have only two hands, so can't hold down all four of those keys and press the start button at the same time. So perhaps it didn't work because I didn't have all four keys pressed at the exact moment that I pressed the start key. But, in any case, I never got as far as two reboots/chimes.
Currently Being ModeratedJan 10, 2013 9:16 AM (in response to nfarlow)
- Shut down your Mac.
- Locate the following keys on the keyboard: Command (⌘), Option, P, and R. You will need to hold these keys down simultaneously in step 4.
- >>Turn on the computer.
- >>>Press and hold the Command-Option-P-R keys before the gray screen appears.
- Hold the keys down until the computer restarts and you hear the startup sound for the second time.
- Release the keys.
After resetting NVRAM or PRAM, you may need to reconfigure your settings for speaker volume, screen resolution, startup disk selection, and time zone information. If issues persist, your Mac's logic board battery (not a portable Mac's rechargeable battery) may need to be replaced. The logic board battery helps retain NVRAM/PRAM settings when your computer is shut down. You can take your Mac to a Mac Genius or Apple Authorized Service Provider to replace the battery on the logic board.
you don't press them at the same time as the power button, and it's Option, not shift