I have a 2011 vintage MacBook Pro which is not booting at all. It gets to the gray screen with Apple logo and does not move ahead from there. I pressed
Command-R at bootup to enter the disk utility screen.
- I ran the disk check utility on the HDD and it returned OK for all checks.
- The verify/repair disk option for the boot drive was greyed out.
When I try to re-install MacOSX Lion by using the internet, it gets to a screen where both the disks to install MacOSX on are greyed out and there is an error message that says "This disk is locked". I went through this question that suggests re-formatting the hard drive to create a new partition and re-trying.
- Are there any other options I can try without needing to reformat the hard drive?
- Is there a way to back up the hard drive before I try the above?
- In the Disk Utility section, the boot drive was greyed out disallowing any repair. Any reasons why?