How to Pre-allocate Disk Space Before Download

If you’re downloading large files and experiencing issues with file fragmentation, you can turn on pre-allocation. FileZilla/FileZilla Pro will find contiguous disk space for each file and create a placeholder file to keep it available.

To enable pre-allocation:

  1. In the main menu, click on Edit > Settings….
  2. Select Transfers from the menu on the left.
  3. Tick the Preallocate space before downloading checkbox.
  4. Click on OK.

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