How to install XP dual system under win7

It is okay to install a dual system, even if it is from a high level to a low level, you only need to fix the startup item. You can't install XP now because XP doesn't recognize SATA hard drives, but it may also be a problem with Southbridge ICH9 (the computer may have this problem in the second half of 2009). I don't know what model of your computer. If it is just a hard disk problem, you can enter the BIOS to set the hard disk to IDE mode, but the most once and for all way is to find an XP disk that integrates the latest SATA AHCI RAID ICH9 driver (you can pay attention to the new radish home disk, feel his driver More comprehensive), you can install it directly. Install XP custom to another partition. After installation, you can only enter XP, and then use EasyBCD to fix the startup item. Run EasyBCD in XP (if you can't run it, you need to install Microsoft .Net Framework2.0), Shijiazhuang computer repair, you can see the startup program of Vista/Win7 in the program after opening the program (this shows that your Win7 startup is not damage). Select Manage Bootloader, then select Reinstall the Vista Bootloader under Bootloader Installation Options on the right, and finally click the Write MBR button to write the master boot record. Repairing Windows 7 boot record successfully after reboot. Restart the computer, Harbin computer maintenance, found that Win7 is back, Hefei computer repair, but Xp has disappeared. Then enter Win7, run EasyBCD, select Add/Remove Entries, select Add Windows XP at the bottom right, click Add Entry, add XP startup item successfully, then click Save at the top right to save the changes. Then restart the computer and you will see the dual system boot menu for Win7 and XP. EasyBCD repair multi-system startup is very simple, Baidu can find very detailed graphic description. Personally recommend that you install Win7 with Ghost before installing XP, in case of any event