The biggest are $MFT, $MFTMirr, $LogFile, $Boot and $Bitmap. Most of them are system files of one type or another.
Some are Office image files. Office is not checked in the application list.
After I run Defrag (df.exe C: /S) and then run it from the desktop, it shows 0 files and 0 fragments in the Status wihdow but if I click on a red box in the map, it shows numerous defragmented files. There are also alot of off color red blocks near the end of the map. Thanks for any help.