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I had a dual boot installation (Win8 & Ubuntu). I was not using Windows much and decided to have Ubuntu for the whole system. When I reinstalled Ubuntu, I got the error

error: no such partition
Entering rescue mode
grub rescue >

Then I tried the following at the grub rescue

set root=(hd1,1)
set prefix(hd1,1)/boot/grub
insmod normal
normal

When I tried these command, I got the Ubuntu boot menu where I was able to start the system. However, when I shut down the system and restarted I got the same grub rescue error. Can you please help?

I am not sure if this helps. Here is the output of sudo fdisk -l

enter image description here

Ankit
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3 Answers3

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if you just wanna boot into windows(btw i'm using windows 10) you can bellow method.

step 1: Go to your BIOS setup.
step 2: Go to boot device option or boot device order.
step 3: select os boot manager and press enter.
step 4: select windows boot manager and press f5.
step 5: press f10 to save.

It should change the priority of os boot manager to windows boot manager, and after rebooting your pc should boot into windows.

Bhart ameta
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Those commands are fixing your problem temporarily.

Try running this command from terminal when Ubuntu is running to try to fix the problem -

sudo update-grub

Running just this command should be enough for you, but if it isn't, you can run all three of these to try fixing your problem. [Replace X with your drive letter]

sudo grub-install /dev/sdX
sudo grub-install --recheck /dev/sdX
sudo update-grub
Sukarn
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You must try Boot-Repair here : https://help.ubuntu.com/community/Boot-Repair it easy use and have solved most problems about grup rescue

Hasan Basri
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    I tried that already. It did not work :( – Ankit Nov 08 '14 at 08:24
  • oh :O okkay maybe you want to try another way like this, first step, check your ubuntu partition, ex: my ubuntu partition on /dev/sda2 and so go to command line and type :

    creatorb@creatorb ~ $ sudo mount /dev/sda2 /mnt next type again creatorb@creatorb ~ $ sudo grub-install --root-directory=/mnt/ /dev/sda and last update your grub by type sudo update-grub and reboot

     – Hasan Basri Nov 08 '14 at 08:32