| Color | Description |
| Red | Most of the clusters are part of a fragmented file. |
| Blue | Most of the clusters are contiguous files with clusters in the group that contain only free space and contigous clusters. |
| Green | Most of the clusters are part of a file that cannot be moved from itscurrent location. On volumes formatted using the file allocation table (FAT), FAT32, or NTFS file system, the green areas typically represent paging files, which are also called swap files. On volumes formatted using the NTFS file system, however, they may also represent space used by the NTFS Change journal and the NTFS log file. |
| White | Most of the clusters are free space and contiguous clusters. |
By comparing Estimated disk usage before defragmentation to Estimated disk usage after defragmentation, you can view the improvement in your volume after defragmenting it. The display shows less than the reports, so if you compare the results. You might notice descrepancies. For precies. Numerical figure, see Analysis and defragmentation reports.
Advantages of Linux over Windows:
- Greater security : A key advantage that Linux has over Windows is greater security for your computer and its data. The viruses, spyware, worms, and browser hijackings that are pandemic in the windows world are almost unheard of among Linux user. This is because Linux is designed from the ground up to be secure. In contrast, only recently has Microsoft made securing its Windows system a priority, and Microsoft must battle decades of security complacency by Windows programmers at Microsoft and by those who write applications for Windows.
Many people believe that Linux is more secure only because it is little used. According to this argument, Linux would suffer from as many viruses as Windows if Linux had greater market share. However, this is false: Windows powers a minority of the world’s Web servers that is, computers that house Web sites Despite this, it suffers from a vastly. Disproportionate share of server worms and viruses, while Linux machines are very seldom infected. For more information, see this assessment in The Register.

