Help with diskeeper lite please

Hi Guys
I have diskeeper lite installed. My HD is partitioned into two drives.
I can successfully defrag drive C but I cannot completely defrag D.
I have 3 very long lines of solid red blocks which I believe need defragging. I have tried at least 20 times even in safe mode but it will just not get rid of all this red.
Runing win xp pro. Maybe I should unpartition the drive and make it all one (just a thought) but I don't know how to do this.
Anyone got any clues please.
Regards
Wombat

 

It could be that you don't have enough free space on the partition.
Diskeeper needs space to re-arrange your files. If your partition is over-full, try moving some files to another partition or delete some of them.
Regards, Blueheeler.