Solutions for Grub Error:unknown filesystem

After using Ubantu and Win7 for two months, it was forced to shut down in Ubantu when the machine was shut down for dinner this afternoon. When you get back in the evening, you'll see a black screen with Grub Error:unknown filesystem! on the screen.

The solution is very simple, as long as the grub and the/boot/grub correspond to it.

Steps:

1. Enter LS to list all the partitions currently available on the disk, depending on the partition order on the original disk, it is possible to determine the partition in which the Ubantu is located. (No time to be sure, just one try)

2. Enter set, which lists the settings for the current grub. This setting is wrong, causing grub to not be able to find the Ubantu partition.

3. Enter set ROOT=HD0,MSDOS1 (this msdosx is the partition to be set)

Set prefix= (HD0,MSDOS1)/boot/grub

4. When you enter set, we have set it up.

5. Enter Insmod Normal, if found or wrong, stating that the settings of the msdos is wrong, there is a need to reset, if correct, then proceed to the next step.

6. Enter normal, and the original Grub menu will be back.

This article is written in reference to other great gods to take notes in case there will be such a situation later.

Solutions for Grub Error:unknown filesystem