Verifying volume “20” 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. Volume Bit Map needs minor repair Checking volume information. Invalid volume free block count Invalid volume free block count uld be %@ instead of %@)",2) 27416926 27410467 Volume Header needs minor repair The volume 20 needs to be repaired. Error: The underlying task reported failure on exit 1 HFS volume checked Volume needs repair and i can't click on the "Repair Disk" button I dont know why... Do i have to format my disk or is there a way i can repair it?