Hi, i just performed "verify disk" in disk utility and it says i got some error,: 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 What should i do ? Should i repair using Disk Utility CD ? is it save for my data ? help needed, thx.