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"This disk is locked" while trying to reinstall Lion

I want to reinstall Lion from the Recovery Disk but unfortunately my "MacBook HD" cannot be chosen. Both my Recovery HD and "MacBook HD" are locked. Under them there is a message "This disk is locked". So my question is how do I unlock "MacBook HD"?

MacBook Pro, Mac OS X (10.7.5)

Posted on Oct 1, 2013 6:43 AM

Reply
1 reply

Oct 1, 2013 10:33 AM in response to kalitko5

Launch the Terminal app in /Utilities/, run these two commands (copy & paste each one separately and hit the return key):


sudo chflags 0 /volumes/*

sudo chmod a+rx /volumes/*


at the Password: prompt, type in your admin password, carefully since nothing displays on the screen, and hit the return key. Restart and then try reinstalling again.

"This disk is locked" while trying to reinstall Lion

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