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.
is this a known issue?
thanks for any help.
WinXP Pro SP1
O&O Defrag Pro 4.0
Avast! 4.0 Pro