DefragDrives for Windows XP, Windows has its own disk defragmenter, which is in the Control Panel in System and Maintenance option. However, this does not mean you can not test and prefer the other tools of the genre, even as the Disk Defragmenter in Windows XP does not allow the defragmentation of more than one disk drive.

Utility capable of defragmenting multiple drives using Windows' defrag tool. Windows contains a good disk defragmentation utility, called Windows Disk Defragmenter. The GUI version (with graphical interface) of the tool, which can be started typing "dfrg.msc" without quotes in Start - Run, is very handy and user friendly, but not perfect:

For Windows XP: doesn't allow the defragmentation of multiple units, neither simultaneously nor consecutively.

If you need to defragment multiple hard drives or partitions (maybe doing something else in the meanwhile) or you want to have a well defragmented hard drive, you can try DefragDrives, an alternative to the standard Windows interface.
Also, this application make use of the standard Windows defragmentation engine, therefore there are no doubt regarding its high performance.

DefragDrives Features:
1. Capable of defragmenting up to 10 units consecutively in normal or in-depth mode (three defragmentation instances on the same unit).
2. Analysis function for the specified units, in normal or in-depth mode (with complete file fragmentation analysis report).
3. "Create Batch" function will generate an user.bat file that will defragment (in normal or in-depth mode, depending on the chosen option) the selected units. Useful if we want to defragment our hard drives with a single click, or maybe create a scheduled task to defragment the specified units without any user input
4. Vista: files bigger than 64 mB will be defragmented, unlike Vistas GUI defragmenter. NOTE: files bigger than 64 mB will not be included in the defragmentation reports.
5. The system can be automatically shutdown on completion.
6. The console can be visible or hidden depending on the users preference.
7. Italian or English languages can be selected inside the program.
8. The user can select the standard or classic Windows interface.

The license of this software is Freeware, you can free download and free use this disk management software.