It also checks for lost clusters, which usually happen when an abnormal shutdown has occured. These are areas on the disk that are reported as occupied by files, but they're actually not associated with any files. They simply take up room on the HD - room that you cannot use for your own files - unless you get rid of those clusters using scandisk. In some operating systems like Windows NT-based, lost clusters are reduced to a minimum by making sure that any IO operation, made by the system, must report its completion to the operating system, or it will be canceled and rolled-back at boot time. /=/=/=/= Deus /=/=/=/=