Many computers are installed two operating systems ,but how to install Windows XP over windows 7 ? There are two methods.

First method: brand new install with the XP installation CD.

First, you need to prepare a primary partition to install XP system. Recommended in Windows 7 system, use the Disk Manager to create a capacity of not less than 10GB primary partition.Restart the computer  by Windows XP installation CD and then install, the installation method is similar to install XP system. Read more