From what version of Windows do you wish to upgrade? Here is the eligibility chart:
You can install the upgrade version to a blank HD if you have the disc for the qualifying Windows version that is licensed to your computer.
Full OEM versions are tied to one computer.
Full RETAIL versions may be moved to a new computer after removed from the old.
Hi everyone. Thanks in advance for the help.
Can you please tell me what is the difference between Win XP "upgrade" and the other (regular?) version? I would like to purchase it but don't understand fully what the benefits and pitfalls are with each. (For example: Will I if needed be able to reload from an "upgrade" version from a blank hard drive?)