Ubuntu9.10LiveCD fixes grub2 dual system boot

I saw some comments about Windows 7 on the Internet a few days ago, so I wanted to try it myself. So I erased the Ubuntu and Windows XP systems installed on a single hard disk, and re-installed Windows 7. As expected, after the installation, the system can only export Windows 7 and cannot enter Ubuntu9.10. After several days of searching for information on the Forum, coupled with multiple attempts, the system finally solved the problem. I want to write it here today.

A few days ago, I saw some comments about Windows 7 on the Internet, so I wanted to try it myself. So I wiped out Windows XP, Ubuntu 9.10 and windows XP, which were previously installed on a single hard disk, if you reinstall Windows 7, as expected, after the installation, the system can only export Windows 7 and cannot enter Ubuntu 9.10. After several days, you can find information on the Forum, in addition, I tried many times and finally solved the problem. I want to help my friends who like Ubuntu 9.10 and Windows 7.

When I installed Ubuntu 9.10, I heard that Ubuntu 9.10 adopts the new ext4 file system, so I chose it during installation. As a result, most grub4dos versions are old, this file system is not supported. Some people on the Internet say that the latest version 0.4.4 seems to be supported, but it is too complicated and not suitable for most people. Otherwise, Windows 7 may be unable to be guided, this method is also available on the Internet. If you like to study it, you can share it with others. I have also found some methods on the Internet for coexistence between earlier versions of Ubuntu 9.04 and Windows 7, but grub used by Ubuntu 9.10 is the new version of grub2 [1.97 beta is displayed at startup]. so the previous method is no longer applicable.

I believe that all the friends who have installed Ubuntu 9.10 have LiveCD installation discs. Today we will use Ubuntu 9.10 LiveCD to fix grub2 boot. Start the Ubuntu 9.10 CD, select LiveCD mode, and then enter the terminal. Enter the following command on the terminal:

Sudo fdisk-l (note the lower-case L, not the number 1. This step is used to determine the location of the partition where Ubuntu 9.10 is installed on the computer. After the input, the following information is output, find the line with ID 83 and remember the/dev/sdaX situation. For example, if your computer is/dev/sda7, use this as an example. Please change it)
Disk/dev/sda: 80.0 GB, 80026361856 bytes

255 heads, 63 sectors/track, 9729 cylinders

Units = cylinders of 16065*512 = 8225280 bytes

Disk identifier: 0x624aa2e0

Device Boot Start End Blocks Id System

/Dev/sda1*1 1388 11149078 + 7 HPFS/NTFS

/Dev/sda2 1389 3825 19575202 + 7 HPFS/NTFS

/Dev/sda3 3826 9729 47423880 f W95 Ext 'd (LBA)

/Dev/sda5 3826 5851 16273813 + B W95 FAT32

/Dev/sda6 5852 8323 19856308 + B W95 FAT32

/Dev/sda7 8324 9598 10241406 83 Linux

/Dev/sda8 9599 9729 1052226 82 Linux swap/Solaris