verify disk problems

[zblaxberg]

What does this mean? and what should I do about it:

Verifying volume “Macintosh HD”
Checking HFS Plus volume.
Checking Extents Overflow file.
Checking Catalog file.
Checking multi-linked files.
Checking Catalog hierarchy.

Checking Extended Attributes file.
Checking volume bitmap.
Checking volume information.
Volume Header needs minor repair
The volume Macintosh HD needs to be repaired.

Error: The underlying task reported failure on exit


1 HFS volume checked
Volume needs repair


Every time I verify the disk it unexpectedly fails so it won't let me repair disk

 

[Makosuke]

Sounds like you're trying to verify the startup disk while booted from it. If so, that's normal--it means you either need to boot in single-user mode (command-S at startup) and run an fsck, or boot from the OS installer DVD and use the Disk utility there. It should repair fine then.