My XP defragmenter utility seems to end abruptly like it doesn't finish completely. Is there an optimum way to set it? My system has slowed down considerably after getting a new 1gb drive
AntiZig makes a good point.
I'm assuming it is a 1 TB drive and since it is new I am assuming it is not close to capacity yet.
That being the case, I have heard a lot of complaints about the built-in defragmenter taking a very long time with large drives (some report it did not complete despite running all night).
Keep in mind that 1 TB drives were not around for much of XP's life -- chances are the built-in was not designed to address that size, so there is no particular setting you can use.
You should consider a third party defrag program that can efficiently handle large volumes. While there are many good free ones, for a 1 TB or larger size, you might consider a commercial defragmenter designed for large disks like Diskeeper 2011 Pro Premier (it has a totally different defrag engine designed for large drives so it is very fast with large drives)
Although it is not free, you can get a free trial and see if that's what you're looking for and if the cost is worth it to you.