You also have to factor in the formatting and partitioning of your drive. In addition, depending on your sector size (I'm not sure that's the right word, haven't read the A+ Manual in a while), files will take up more space on your drive.Heyyo,
I know, but it should be more eh? a KB = 1024 Bytes. so 80 GB = 81,920,000,000 Bytes. I'm only getting like, 75,776,000,000 Bytes. So I'm lacking quite the huge amount of bytes man.. and I could've used those extra few GB's man as I've only got 3GB's free, and I need more free in order to defrag my HD.. won't defrag the big files for some reason. I know you should have 15% of the HD free for a good defrag, but that sounds pretty rediculous to me.. the fragmented files are mainly my BF2 ones thus my longer loading times with that game.
[EDIT]
I guess you also can't really depend on advertising anywho.. next HD I'm buying is definately WD. Gonna give them a try.
Smaller sectors = better. For example, say you have an 80GB drive with 4KB sectors. If you go to save a 1KB file on the 4KB cluster, you can only save one file on said sector and the other 3KB are removed from the disk space. That is why often in file properties you will see both "file size" and "file size on disk"