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What does "x passes needed" mean?

  • Stefan Pendl
    Stefan Pendl

    There are several situations where UltraDefrag will have to process the disk multiple times in a row.

    • file is locked by another application
    • file is locked by operating system
    • not enough contiguous free space

    Just to name the most common causes.

    In this case UltraDefrag processes the remaining fragmented files once more until there was nothing moved during the pass.