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This article introduces the relevant knowledge of "ubuntu prompts no such device grub rescue how to solve". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Get up early in the morning and turn on the computer. It can't start.

Show no such device blablabla

Grub rescue >

Gray often at a loss, helpless, had to open the old guy at home.

After a meal of baidu google, it is probably clear that there is something wrong with the grub loading software caused by the automatic upgrade last night.

There are two solutions online:

I try one: successful! As this problem is quite common, write a small report to guide future generations.

My computer is equipped with xp and ubuntu10.04.

Problem description: the grub error in the boot initialization process may be caused by a variety of reasons, which is caused by the upgrade

Reason: the master boot record MBR disappears.

Solution:

One is to fix MBR (mbtfix) in windows. Exe)

The other is to repair MBR in ubuntu.

Popularize the knowledge MBR:

The MBR may be used for one or more of the following:

Holding a disk's primary partition table.

Bootstrapping operating systems, after the computer's BIOS passes execution to machine code instructions contained within the MBR.

Uniquely identifying individual disk media, with a 32-bit disk signature; even though it may never be used by the machine the disk is running on.

I did it in the second way:

Make your own livecd, a self-bootable linux installation disk.

I couldn't burn cd, so I made a boot disk from a flash drive:

Web site: http://www.ubuntu.com/desktop/get-ubuntu/download

There are very detailed steps on it.

1. First download an iso image file of ubuntu

two。 Download universal usb installer

3. Run installer to make the u disk into a boot disk (mobile hard drive is not good)

4 set the loading order of the computer, "start the usb device first". Restart

5. Start ubuntu directly and open terminal.

Input: sudo apt-get install lilo

Sudo lilo-M / dev/sda mbr

(ignore all warnings, we just want mbr)

6. Restart and modify the loading sequence. Everything is normal.

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