Disable Automatic Disk Defragmentation in Vista with dfrgui
By default Windows Vista will automatically defrag your hard drive (defrag: reorder files on the physical hard disk and not to make them easily accessible / re-organising your file cabinets).
The default is that Vista itself schedules the best time for this to do, while this could decrease real-time performance it might be better if you choose when to defrag yourself. An easy way to disable this scheduled defragmentation is as follows.
1) Click START, type dfrgui and hit ENTER. (see figure 1)
2) Then uncheck Run on a schedule (see figure 2) and click OK.
Note: While the above is a lot faster 
you can also do this by browsing to Control Panel, System and Maintenance, choose Defragment your harddrive.
Tags: default_windows, defrag, defragment, defragmentation, hard disk, Hard drive, time_performance, windows vista
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Kobayashi on 16 Jul 2007 at 10:41 am #
As mentioned previously, I use Diskeeper 2k7 on my PC. For the past few weeks, I have left its autodefrag mode ON and it has never interfered with my usage of the PC – it backs off whenever there is a program running but kicks in when the PC is idle. Works very well and keeps my harddrive defragged without my involvement.
Vista’s auto defrag never used to interfere either, but then again, it didnt ever seem to defragment anything, so it was pretty much pointless.