repeat defrag

great product!

I am runing defrag on an 80Gb hdd

when it is completed there is about 1/2 the hdd blocks are still in red.

is it ok to continue running Defraggler over & over again until all or most of the red blocks are gone?

There is only 12.4Gb free

Hello NZHawk and welcome to the forum. Be aware that there are some system files that cannot be defragmented while Windows is running. I suggest trying a boot time defrag, instructions are here: http://www.piriform.com/docs/defraggler/defraggler-settings/boot-time-defrag Choose to run it once, and after Windows restarts, try a second defrag and see if there are fewer fragmented files.