Install Windows 7 to boot the previous ubuntu (ext4)

Install Windows 7 and boot the previous ubuntu (ext4). 1. Insert the ubuntu installation disk and restart it. Select "Try ubuntu without changing anything on the computer" 2. Open the terminal, or press Ctrl + alt + F1 to enter the command line. 3. sudo-s (switch to the root user) 4. grub (This will take a long time, almost two ice cream efforts, please wait, the total proportion of the system is good) www.2cto.com 5. find/boot/grub/stage1 (return a value in the shape of (hda, 5), which should be used in the next step) 6. root (hda, 5) (This (hda, 5) is the value on my machine. It doesn't matter if everyone's computer is different because of different partitions, fill in the value in step 1 !) 7. setup (hd0) 8. quit (exit grub) 9. reboot (restart) Author samwalt