can u tell me difference
Look towards the top right of this page.
Find the Search box.
Type in Fat
You'll find 3 or 4 good links, right here on Computer Hope.
Be sure to read them completely, and note that often each page contains even more good links to follow.
Repeat the search with NTFS , just to be sure you haven't missed anything here.
Computer Hope Admin, or somebody, has spent a lot of time creating a
lot of informative pages here. They are an excellent resource, and I think they are often overlooked or forgotten.