Whenever I run O&O Defrag Pro to defrag, and if Avast! 4 Pro is on at the same time, O&O produces a “checkdisk error” and thus can’t continue defragging my main drive.
On the partitioned half however, the checkdisk goes through and the drive is defragged.
If I turn Avast! OFF, then the checkdisk goes through and everything is defragged properly on the main HD.
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Actually it’s related to NTFS partitions. It’s always been working perfectly on FAT/FAT32 volumes, just NTFS partitions were causing problems. Fortunately, even this has been resolved (as discussed in the other thread).