Wondows XP users have to Clean install Windows 7

Windows 7 will be released later this year or early 2010. Many Windows XP users will have to do a "complicated" upgrade. Unlike Vista users, Windows Xp users can't do an "in-place upgrade," in which the new OS overwrites the old one, preserving their installed applications, preferences, and data. Instead, they'll have to do a clean install, which means they have to back up their data, install Windows 7 (either deleting XP or installing as a separate environment), reinstall their apps, restore their data, and re-create their preferences. Read the article why clean install is a better choice even for Vista users.