I can not login; Disk Utility: Invalid sibling link. Disk Utility can't repair this disk. Now what?
When I power up, the computer does not get past the white screen with the Apple logo and the spinning dial.
When I powered up holding down Command-R [Command and letter R buttons], about 1 & 1/2 minutes later the "dark grey fabric" screen came on with the "Mac OS X Utilities" window/box open.
I selected "Disk Utility".
I clicked the "Verify Disk" button.
Results to Verify Disk:
Verifying volume "Macintosh HD" [bold type/letters]
Checking file system
Checking Journaled HFS Plus volume.
Checking extents overflow file.
Checking cataloque file.
Invalid sibling link [in red letters]
The volume Macintosh HD was found corrupt and needs to be repaired. [red letters]
Error: This disk needs to be repaired. Click Repair Disk [red/bold letters]
Repair Disk [I clicked]:
Verify and Repair volume "Macintosh HD" [bold letters]
Checking file system
Checking Journaled HDS Plus volume.
Checking extents overflow file.
Checking cataloque file.
Invalid sibling link. [red letters]
Rebuilding catalog B-tree.
The volume Maintosh HD could not be repaired. [red letters]
Error: Disk Utility can't repair this disk. Back up as many of your files as possible, reformat the disk, and restore your backed-up files. [Red/bold letters]
I reset the PRAM by starting the computer up while holding down Command-Option-P-R [Command, Option, P, R keys]
I can not Reinstall Mac OS X Lion;
I get the following message:
Recovery HD
650 MB total • 140.3 MB available.
This disk is locked.
Macintosh HD
This disk is locked.
What now?
iMac (24-inch Early 2008), Mac OS X (10.7.4), 4 GB 800 MHz DDR2 SDRAM
