Do you desperately want to restore missing data on Mac OS X ? There were some files in the Mac drive that you had saved few days earlier and when now you are trying to access you find them missing. You don't really understand where they have gone. You may have deleted them or performed any cut paste operation which has dislocated the files. There is also a possibility that it is not your fault and the files are missing due to the drive corruption issue or may be it is virus infected. First of all you will have to deal with the drive issue that can be resolved by using the disk utility then after restore missing data on Mac OS X from the time machine backup if it has the copy of it. If the backup doesn't work then you can use the Mac data recovery software that will perform a through scan of the Mac drive to find the missing files. These files will then be showed in the preview when can be selected for recovery. However you must take care of the overwriting issue. So download the software now and restore missing data on Mac OS X immediately.