iMac HDD blues... help wanted

[cooky560]

I ran fsck on /dev/rdisk0s2 this after a power cut and received the following error:

** /dev/rdisk0s2
** Root file system
Executing fsck_hfs (version diskdev_cmds-491.6~3).
** Verifying volume when it is mounted with write access.
** Checking Journaled HFS Plus volume.
** Checking extents overflow file.
** Checking catalog file.
** Checking multi-linked files.
** Checking catalog hierarchy.
** Checking extended attributes file.
Incorrect number of extended attributes
(It should be 175599 instead of 175599)
** Checking volume bitmap.
Volume bitmap needs minor repair for orphaned blocks
** Checking volume information.
** The volume HDD cannot be repaired when it is in use.
** The volume HDD could not be repaired.

I recieved the same error in Single User mode, so I tried booting off the Snow Leopard Cd and running the same command, it said everything on the drive was fine, so after rebooting back into OS X for one last check I ended up with the error above again, any idea on how to solve this problem?

Also, according to the Boot CD I have about 300mb more free space on the disk than I do according to the file system

 

[LaWally]

I don't see where you tried running disk utility to repair the problem. Did you?

 

[ZMacintosh]

try repairing permissions or using disk warrior

 

[cooky560]

I don't see where you tried running disk utility to repair the problem. Did you?

Disk utility reports no errors either from the install cd (where both fsck_hfs and disk util report no problem) or from the computer (where both Single User fsck_hfs and regular fsck_hfs reports a problem, but disk utility does not.

After repairing permissions I get the following:


** /dev/rdisk0s2
** Root file system
Executing fsck_hfs (version diskdev_cmds-491.6~3).
** Verifying volume when it is mounted with write access.
** Checking Journaled HFS Plus volume.
** Checking extents overflow file.
** Checking catalog file.
Invalid index key
(4, 15379)
** The volume HDD cannot be repaired when it is in use.
** The volume HDD could not be repaired.

Whats REALLY odd however is this error doesn't appear if I use Disk Utility or Fsck on the rescue CD

 

[cooky560]

Anyone?

 

[Reaktor5]

https://discussions.apple.com/thread/1943678?start=0&tstart=0

Same issue in this discussion. I'd back everything up, reformat, and do a clean OS X install.

 

[cooky560]

Hey, I used this as an excuse to only run from Lion banishing SL from my Mac, however after following this procedure:

1. Using diskutil zerodisk disk0
2. Booting from a USB image of Lion Installer
3. Installing Lion
4. Installing Updates
5. Repairing Permissions

I'm getting the same errors.