Technical information

User Interface (GUI)
O&O Defrag - 27
Description Explanation
Compressed
At least one cluster is allocated by a
non-fragmented compressed file
(NTFSonly).
Allocated At least one cluster is allocated by a
non-fragmented file.
System
At least one cluster is allocated, but
could not be assigned to a file.
Reserved for MFT This area is reserved for the Master
File Table (NTFSonly).
Free All clusters are empty.
* Note: A cluster represents the smallest logical allocation unit that the operating system can use for saving files on
a disk.
Defragmentation summary
After each defragmentation run you will be presented a comparison of the drive's allocation before and after opti-
mization by O&ODefrag. The defragmentation summary clearly shows the difference a defragmentation makes.