Tag Archives: no such partition

Win7 and Ubuntu dual system, start error: no such partition grub rescue

My laptop installed Windows 7 and Ubuntu dual system, due to company regulations, after installing sandbox software and modifying Win7 partition, I could not start Windows 7 and Ubuntu.
Here is the solution:
First, restore the Win7 system to start.
Use U disk to do a “old peach Winpe” to start disk, specific method see “old peach” official website.
enter winpe, start menu -> “Boot repair”, the window background color is green, select the system is located in the disk character, generally C disk, according to the prompt to operate.
Enter Win7 and restore Ubuntu disk boot.
Open the partition assistant and click “Free partition” to quickly restore boot. The “free partition” is restored to its original partition, such as an ext4 partition.
Restore and boot Ubuntu
1, make Ubuntu install usb flash drive, not Baidu. 2, set the BIOS from the U disk, select try ubunu, do not install.
3, enter the system open terminal
sudo add-apt-repository ppa:yannubuntu boot-repair & & Sudo apt-get update
then type sudo apt-get install-y boot-repair & & Boot-repair
and click the first note: repair
Then it will tell you: Close Boot Security, Retry, just click Yes, wait a few minutes and restart the Ubuntu Boot TAB.

Ubuntu14.04 installation error: no such partition

Reference:
Ubuntu boot up with GRUB Rescue> Terminal mode repair methods: http://www.linuxidc.com/Linux/2012-07/65249.htm
Windows& Ubuntu double system a key Ghost, prompt grub rescue solution: http://www.linuxidc.com/Linux/2015-01/111189.htm

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Windows 7+Ubuntu14.04 dual system has been installed, a Ubuntu14.04 has been installed, the following error occurs after boot:

error：no such partition
Entering rescue mode...
grub rescue>

has been reinstalled in the system before, so this problem has been encountered several times. Record it today

There are not many commands available in this case, ls, set, insmod

Enter LS and the following information appears:

(hd0) (hd0,msdos7) (hd0,msdos6) (hd0,msdos5)

this information should be the disk partition information, the mode is approximately (hd0,msdosX), X represents the number

Enter SET and the following information appears:

cmdpath=(hd0)
prefix=(hd0,msdos8)/boot/grub
root=hd0,msdox8

 

To find out which partition Ubuntu is installed on, here’s how:

ls (hd0,msdosX)/grub  OR  ls (hd0,msdosX)/boot/grub

enter the above command in turn, X is the number, is the ls command appears in the number, if there is a lot of file information, is the partition

Assume that the input LS (HD0, MSDOS4) is a lot of information. Next, set:

set root=(hd0,msdos4)
set prefix=(hd0,msdos4)/grub

Note: If /boot/ GRUB is above, change the following command accordingly

After setting, you can input set command to view, and the output information will change to:

cmdpath=(hd0)
prefix=(hd0,msdos4)/grub
root=hd0,msdos4

 

Continue typing the command:

insmod normal

This works for me or

insmod /grub/normal.mod

Or change to the corresponding /boot/grub/…

Finally, enter:

normal

Grub’s boot menu is restored

After entering Ubuntu, enter the following command:

sudo apt-get install grub2
sudo update-grub
sudo update-install /dev/sda

restart, return to normal