|Let me go back then. It might be various reasons that 150 G is shown. From unmovable files to size on it maybe other reasons as above.|
I just don't think you will really see any value to this. Defrag will work only on fragmented files. System and applications files tend to be stationary. Only used files get fragmented. I think windows 7 does it on it's own anyway so you don't have to.
Long ago there were valid reasons for partitions but not so much any more. I doubt you will hit the limits of files or directories. There is no bios limit and no OS limit (well..) that you should worry about.
I'd say just leave it at the near 1T. I never seem to need smaller drives.
Playing to the angels
Les Paul (1915-2009)