Because Windows Vista and Windows XP are booted differently, when you install XP on WindowsVista, you can break WindowsVista's system startup files and go to the Windows Startup Manager window. Cause the WindowsVista system to be unable to use. Therefore, after the installation of Windows XP, but also to repair the WindowsVista system boot files, so you can use the dual system, the following steps:
Step 1: CD-ROM Boot
Reboot the computer into the BIOS, set the optical drive as the first boot, and put the Windows XP system CD into the CD drive for CD-ROM booting, as shown in the image on the right.
Step 2: Go to the Windows installation interface
When the system detects the current computer installation environment, 逬 into the Windows installation interface and press "Enter" to start installing Windows, as shown in the following figure.
Step 3: Accept the License Agreement
Eject the Windows Licensing protocol interface and press the "F8" key to agree to the license agreement, as shown in the following figure.
Step 4: Select the installation partition
Enter the Select Installation Partition list interface, select partition 2 and press "enter" to continue, as shown in the following figure.
Step 5: Select the format partition type
pops up the format partition type interface, with the arrow keys to select the format disk partitions with NTFS file system (Quick) option, and then press the "Emer" key to continue, as shown in the following figure.
Step 6: Format the partition
The system begins to format the partition as shown in the following illustration.
Step 7: Copy the Windows Setup files
Start copying the Windows installation files to your hard disk, as shown in the following illustration.
Step 8: Go to Windows window Setup mode
After copying the installation files, the system restarts the computer and then goes to Windows installation mode, as shown in the following illustration.
Step 9: Personal settings
Windows window mode after each option is installed, the computer restarts, and then personal settings, as shown in the following illustration.
Step 10: Install complete
Once the personal settings are complete, the XP operating system is installed on the Windows desktop as shown in the following illustration.
Step 11: Start the Bcdautofix software
Below, restore the WindowsVista system boot file, download and start the Bcdautofix software, press any key on the keyboard to start automatically repairing the system boot file, as shown in the following figure.
Step 12: Press any key to exit after the fix is finished
Start the automatic repair of the system boot file and press any key to exit after the repair completes, as shown in the following figure.
Step 13: Enable Windows Startup Manager to select a dual system
When you restart your computer, the Windows Startup Manager window pops up, where you can choose whether to use Windows XP or the WindowsVista operating system, as shown in the following illustration.