Defrag Amount different than Windows defrag amount

Archive
1

I just ran the defragmenter on the C drive with the Windows defragmenter and now it shows 0 %. Then I ran Norton defragmenter and got 28 % on the C drive.

Why the big difference?

2

I just ran the defragmenter on the C drive with the Windows defragmenter and now it shows 0 %. Then I ran Norton defragmenter and got 28 % on the C drive.

Why the big difference?