I was trying to use boot camp to set sut windows, and it wouldnt let me partition the disk because it saud it needed to be repaired. I went into disk utility and pressed verify disk. Then this came up: 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 does this mean, and how do i repair it? Will repairing it erase my drive?