Quick uninstallation and deletion of Windows 7 in Vista we have previously introduced the installation of Windows 7 dual system. However, due to the different downloading of Windows 7's flagship system, many readers encounter difficulties when uninstalling Windows 7 in two systems: windows 7 partitions cannot be formatted, and the dual-system startup item does not know how to handle them. In fact, there are also some tips for uninstalling Windows 7 in the two systems. The uninstalling Windows 7 in the Windows XP system is different from Operating Windows 7 in the Vista system. Tips for uninstalling Windows 7 on a two-system basis: If Windows 7 is installed on an XP or Windows 7 system, you need to process the boot menu of the two systems before uninstalling Windows 7, after the start manager shared by the two systems is removed, the partition where Windows 7 is located can be properly formatted. The method is as follows: first, start to the XP system, and put the Windows 7 installation disc in the Computer Optical Drive (if the downloaded ISO image file, you can use the Virtual Drive Deamontools to read and load the Windows 7 CD image to the Virtual Drive. Next, click "Start Menu/Run" to bring up the command line window. In the command line window, Enter K: bootbootsect.exe/nt52all/force and press the Enter key to run the command. Note that K is the drive letter of the Windows 7 installation disc in this example, you need to change the K to your drive letter based on the drive letter you have placed on the Windows 7 disc. Again, the Windows 7 installation disc is displayed. Next, restart the computer. Then, we can find that the Windows 7 system startup Item and earlyversionWindows option in the dual system startup menu disappear and go directly to the Windows XP system, this indicates that the dual-system boot menu has been deleted. Finally, in the restarted Windows XP system, you can manually delete Windows 7 files and folders, such as program files, users, and Windows folders. If there are no other important files, directly format the partition where Windows 7 is located, which is the most convenient. Uninstall Windows 7 in XP. Tips for uninstalling Windows 7 on a two-system basis: uninstall Windows 7 on a Vista or Windows 7 system. If you want to uninstall Windows 7 on a two-system basis that is similar to Windows 7 on the idea above, you still need to process the dual-system boot menu first, then delete Windows 7. First, start the Vista system, run msconfig in the search bar of the Start Menu, open the system ghost win7 system to download the Configuration Utility, and open the start tab, then you will see the options of the two operating systems installed on the local machine. In fact, select the Windows 7 to be deleted, and click the delete button to delete the Windows 7 startup Item. Finally, restart the computer. The dual-system boot menu has been deleted. Next, go to the Vista system and format the hard disk partition where Windows 7 is installed to delete Windows 7.