Apple Mac mini Server (Mid 2010) - Manual (Page 45)

45 Chapter 4 Problem, Meet Solution
If your Mac mini freezes during startup or you see a flashing question mark
 Wait a few seconds. If your Mac mini doesn’t start up after a delay, shut it down by
pressing and holding the power (®) button for about 5 seconds. Then hold down
the Option key and press the power (®) button again to start up your Mac mini.
Keep holding down the Option key until your Mac mini starts up, then click the arrow
under the icon of the hard disk you want to use as your startup disk.
 After your Mac mini starts up, open System Preferences and click Startup Disk.
Select a local Mac OS X Server System folder.
 If the problem occurs frequently, you may need to reinstall your system software
(see “Reinstalling Software Using Remote Install Mac OS X” on page 46).
If your Mac mini doesn’t turn on or start up
 Make sure the power cord is plugged into your Mac mini and into a functioning
power outlet.
 Press the power (®) button and immediately hold down the Command (x), Option,
P, and R keys on an Apple keyboard until you hear the startup sound a second time.
This resets the parameter RAM (PRAM). On other keyboards, press the power (®)
button and immediately hold down the Windows, Alt, P, and R keys.
 Unplug the power cord and wait at least 30 seconds. Plug the power cord back in
and press the power (®) button again to start up your Mac mini.
 If you still can’t start up your Mac mini, see “Learning More, Service, and Support” on
page 54 for information about contacting Apple for service.