A Mini Server (two disks, no superdrive) became redundant in our setup, so I used it to test a few things. At the same time I needed Visual Studio, so I dedicated one of the drives to Windows 7. After installing it with bootcamp, the mini would reboot as Windows, but if I pressed option and selected OS X, and rebooted after having used OS X, I’d get a “no OS” flash and the mini would reboot, find no OS, reboot again and loop. If you ever get this problem, the fix is easy: Press the option key and select boot into OS X, then go to System Preferences, Startup disk, select your OS X disk, and press restart. It’ll now behave correctly and reboot into OS X at startup.
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