Mac is one of the most used system because it provide excellent features and functionality. Mac computer use HFS file system which organize files and folders on the computer hard disk and catalog record is such an entry of file on the disk directory. Usually there are four types of Catalog record which is file, folder, file thread and folder thread respectively. If there is any other catalog record other than these four then the disk utility will report Invalid catalog record error. Occurrence of this error will not let you perform any task and make the files inaccessible on your Mac system.