You can search the site contents using this form. Enter the expression you are seeking (example: "2.00" without the quotes) and the results will display after searching indexed text from each page. Try not to use the word 'DOS' in your search to avoid returning long lists.

Results are keyword-based, and multiple occurances may be returned that cross-reference different areas of this site. When searching for DOS versions, make sure you use version x.xx vs. x.x

If you know the specific DOS version you want to know about, it might be easier and quicker for you to use the menu on the left.