How to defragment your pagefile in Vista
By opening a Command Prompt session with administrative privileges, you can use the defragmentation program with various command-line options. (For details, type defrag /? at the command prompt.).
All articles tagged: defragment
Why does Disk Defragmenter utility not fully defragment a drive?
A volume must have at least 15 percent free space before Disk Defragmenter can completely defragment the volume. If you have less free space available, the operation will run, but only partial defragmentation will result.