Originally posted by: skiingliberal
I do use a lot of space for mp3s. what are cluster sizes (yes, I'm really new to this!)
Like LED says, the default is 4k clusters in Windows. You'll be able to use either 4, 8, 16, 32, or 64k clusters in Windows, although I think that certain NTFS/Windows features are disabled over 16K: file-system encryption, compressed folders, etc. For you, these features are worthless anyway.
Simplified, a cluster is the unit of disk allocation for file storage. If you save a 2k text file on your machine right now, then view the properties of the file, you'll see that its size is reported as 2k, but its size on disk is reported as 4k. This means that on a partition with a 4k cluster size, the amount of wasted space averages about 2k per file stored on disk (the middle of the 4k possible range for the last unit used to store the file).
These chunks of data used to store a file can be scattered over the disk; a 16k file takes up 4 4k units, which can in different locations on disk (although the bytes within each unit are guaranteed to be stored in sequential order). This is known as "fragmentation"-- as a matter of fact, when you watch Windows shuffling things around during a defrag, it is simply moving units from one place to another.
Now you should realize that with a 16k cluster size, among other things that same 16k could NOT ever become fragmented!
The per-file waste does go up with higher cluster sizes, but if you're storing large files, that doesn't matter a whit.
I usually create the system partition when I'm setting up a new disk, but leave the rest of the space un-partitioned. After the OS is installed, I go into Administrative Tools, into the Computer Management dialog (MMC snap-in); in there you'll see a section labelled "Storage - Disk Management". From there, you can right-click on the unpartitioned space of the drive, and create a partition very easily. It'll prompt you for a partition size; the "Default" value in the dropdown means 4k.
I'd wish you luck, but you won't need it. It's very easy to do.