Solution to Ubuntu startup error caused by changing the uuid of the c drive in multiple systems of XP, win7, and Ubuntu

Ipad2 upgraded ios5 without jailbreak, follow Weifeng Forum method (http://bbs.weiphone.com/read-htm-tid-3189870.html) Try iTunes authorization. However, after the uuid of drive C is changed to 2a1d0905 in step 1, restart the computer and choose to enter the Windows system. The following error occurs in Ubuntu:

Error: no such device 6C ************** 5E

Error: no such disk

The reason is that the uuid of drive C has been changed, while Ubuntu looks for the boot file of drive C according to the original UUID of drive C (that is, the 6cac ********* 015e in the error message, after the uuid is changed, the C disk cannot be identified and the above error occurs.

Solution:

(1) Go to the Ubuntu system, open the folder/boot/grub, and find grub. cfg.

(2) enter the following command in the terminal to obtain the read and write permissions of grub. cfg: sudo chmod 666/boot/GRUB/grub. cfg

(3) Open grub. CFG: Specifies the uuid in the partition where the Windows boot file is located in row 78th. It is a 16-Bit String, for example, 6cac ********* 015e, change the last 8 digits of the uuid to 2a1d0905, and save and close the UUID.

(4) restore the read and write permissions of grub. cfg on the terminal, that is, sudo chmod 644/boot/GRUB/grub. cfg.

(5) restart your computer and now you can access the Windows system normally.

Refer:

Ubuntu methods for modifying document permissions http://www.linuxdiyf.com/viewarticle.php? Id = 80622