How to reboot iMac from white screen
How do I reboot my iMac from a white screen I have done Command R and have tried to reinstall but I am getting a msg that the disc is lock
iMac, OS X Mavericks (10.9.2)
User profile for user:
jason269
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Community Specialist
Hello, Radegan.
Thank you for visiting Apple Support Communities.
Here are a couple troubleshooting articles that I would recommend going through when experiencing this issue.
About Disk Utility's Repair Disk Permissions feature
http://support.apple.com/kb/ht1452
Mac OS X: Gray screen appears during startup
http://support.apple.com/kb/TS2570
Cheers,
Jason H.