Windows 7: How to add back the missing XP partition

If you find that your Windows XP partition is not shown in Windows 7 (beta), you can add it as follows:
* search for "computer management" in the program search box and launch it.
(or via Control Panel> Administrative Tools> Computer Management)
* under Storage> Disk Management you should be able to see the missing XP partition (without a drive letter)
* now right click> "Change Drive Letter and Paths", and specify a drive letter.

now you should be able to see the XP partition in Windows Explorer.