Defrag not available?

[SpreadTooThin]

I wanted to defragment drive c:
I right clicked on it, went to properties, tools, Defragment Now....
The disk defragmenter window appears...
BUT.. Analyze and Defragment do nothing...
No errors nothing.. The buttons just do not seem to do anything.

 

[DL]

How much free space is on your drive?

 

[SpreadTooThin]

How much free space is on your drive?

More than 50%

 

[SpreadTooThin]

How much free space is on your drive?

And less then 25% on the one that doesn't work!!!
hmmm... You may have a point...
Ok whats your point?

 

[DL]

If you have too little free space, typically 15%, some utilities wont run,
eg disk cleanup

You are logged in with adminstative rights?
If you have another HD does this defrag?

You could also try this?
http://www.kessels.com/JkDefrag/