windows 7 Parallel defrags
The standard Windows 7 defragger offers a little more control than we saw in Vista, and the command line version also has some interesting new features. The /r switch will defrag multiple drives in parallel, for instance (they'll obviously need to be physically separate drives for this to be useful). The /h switch runs the defrag at a higher than normal priority, and the /u switch provides regular progress reports so you can see exactly what's going on. Enter the command
defrag /c /h /u /r
in a command window to speedily defrag a system with multiple drives, or enter defrag /? to view the new options for yourself.