Defraggler options - Defrag tab

Hard drives are fastest at the beginning of the drive, and slowest at the end of the drive. That means that you'll get the best performance from your PC if your most-used files are placed at the beginning of the drive. You can find out more about this here.

Defraggler enables you to move large files to the end of the drive. Typically these large files are video or storage files, so they're not used very often. By moving them to the end of the drive, you're freeing up 'fast space' for files you use far more often. You can control which types of files and what sizes of files Defraggler moves.

  • To set Defraggler to move larger files to the end of your hard drive, select Move large files to end of drive. This enables all the other settings in this tab.
  • To set the minimum size of files that Defraggler will move, type a number (in megabytes, or MB) in the Minimum file size dialog box. The default is 250MB.
  • To specify which large files Defraggler should move, select Move only selected files, folders, and file types:
  • This enables the Category and File Types area.

Options window, Defrag tab, Movement settings

In this example, we'll add VMDK files as file types we'd like Defraggler to move to the end of the drive. VMDK stands for VMWare Virtual Machine Drive files. This is only an example - if you use VMDK files, you would have to make the determination as to how frequently they are used.


To add a VMDK file type for Defraggler to move:

  1. Select Move large files to end of drive
  2. Select Move only selected files, folders, and file types:
  3. Click Add
  4. In the Add Category dialog box, type a name for the category ("VMDK files," for example)
  5. In the File extensions box, type the file extension (*.VMDK). If these types of files had more than one extension, you'd insert a pipe symbol | followed by the next extension. This would look like:
    *.VMDK | *.XYZ
  6. Click Add

You can modify and delete existing Category entries using the Edit and Remove buttons. Click OK once you have finished making changes on this tab.

You can also select the options in the Advanced section of this tab to alter the behavior of this function.

  • Do not move 'Large Files' during Defrag Freespace: As this function may not fully optimize the amount of contiguous free space that you have, this can be disabled when performing a Defrag Freespace process.
  • Do not apply minimum file size to custom Files/Folders: This option would allow you to override the minimum file size you've sent to move all files in the custom folders (or custom file rules) you set so that they'll be moved in their entirety to the end of the drive.

NOTE: If you select Move large files to end of drive but do not specify file types, Defraggler will attempt to move all files equal to or larger than the size in the Minimum file size text box.

Need to find your product license key?

Go to our license lookup page and enter your registered email address to retrieve info about your products, including product download links, license key(s), and expiry dates.

Send me my license details

Articles in this section