Previously we introduced the installation of Windows7 to play dual systems, but because the computer system win7 Ultimate system download is not the same, many readers encountered difficulties when uninstalling dual system Windows7: Windows7 partition can not be formatted, dual system startup items do not know how to deal with. In fact, dual system uninstall Windows7 is also a trick, uninstall Windows7 under xp system and sanction Windows7 under Vista system, there are different skills. Dual system uninstall Windows 7 skills: uninstall Windows 7 under XP If you are installing xp and Windows7 dual system, you want to completely uninstall Windows7, you need to deal with the dual system boot boot menu, remove the dual system share boot manager After that, the partition where Windows 7 is located can be formatted normally. The method is as follows: www.dnzg.cn First, boot to the xp system, put the Windows 7 installation CD in the computer CD-ROM (if you download the ISO image file, you can use the virtual drive Deamontools to read and load the Windows 7 CD image to the virtual drive Second, click “Start Menu/Run” to pop up the command line window. Enter K:bootbootsect.exe/nt52all/force in the command line window, then hit Enter to run. Note that K is In this example, the drive letter of the Windows 7 installation CD is inserted. The reader needs to change the K to the drive letter of the Windows 7 CD. Again, the Windows 7 installation CD is displayed. Next, restart the computer, we can Found that the dual system boot menu Windows 7 system startup items and earlyversionWindows options disappeared, directly into the xp system, which indicates that the dual system boot boot menu has been deleted. Finally, in the restarted xp system, you can now manually delete Windows 7 files and files Folderd, such as program files, users and Windows folders. If no other Important files, directly format the partition where Windows7 is located. The most convenient thing is to uninstall Windows7 under XP. The dual system uninstalls Windows7: Uninstall Windows7 under Vista system If you install vista and Windows7 dual system, think Uninstalling Windows7 is similar to the previous xp, still processing the dual system boot menu first, and then deleting Windows 7. The operation is as follows: First, start the Vista system, run msconfig in the search bar of the start menu, open the system ghost win7 system download configuration utility Tools, and open the boot tab, then you will see the options for the two operating systems installed on the machine, in fact, select the Windows7 you want to delete, and then click the delete button to delete the boot items of Windows 7. Finally, restart the computer, double The system boot menu has been deleted. Next, enter the Vista system and format the hard disk partition of Windows 7 to complete the deletion of Windows 7.