Running Defraggler on a 2.0 TB disk partitioned into a 250GB "C" and 1.8TB "D" disk. Defraggler runs fine on the C partition, but when the D partition is selected the "Analyze" and "Defrag" buttons instantly halt when clicked.

Defraggler does not crash and another drive can be selected, at which point the program functions fine.

Has anyone seen strange behavior in Defraggler for large disks/partitions? I have tested with the built-in defrag utility and it functions fine. I've also checked for file system errors and ensured that there is no pagefile on "D:" to no effect.

Debug file is attached. Thanks!

EDIT: The command-line version runs without any errors, but the tasks finish insanely quickly (full drive defrag in 30 seconds?). Not sure that it is accomplishing anything, and the /debug3 information is... very sparse.

Thanks, I'll get this looked at

Can you please use chkdsk before the defrag to make sure that there are no filesystem errors?

If it still does not help, please try out the new 64 bit version of Defraggler.

Best regards
Romanoff