I have a portable hard drive with two partitions. I plugged in my hard drive this evening and only one partition would mount. I went into Disk Utility to take a look at what was going on. I selected the unmounted partition and clicked the mount button. A warning came up that said "The disk could not be mounted." I went to verify the disk and this is what came up : Code: [B]Verifying volume Jeffery[/B] Checking Journaled HFS Plus volume. Checking Extents Overflow file. Checking Catalog file. [COLOR="Red"]Invalid sibling link The volume Jeffery needs to be repaired. [B]Error: Filesystem verify or repair failed.[/B][/COLOR] When I try and repair the disk, it has the same Invalid sibling like message. Could somebody please tell me how to fix this?