Reprinted Error:unknown filesystem Grub Rescue>

I am a ubuntu11.04 and 2win7 dual system that uses Acronis disk Director suit to partition non-system disks under Win7, and then restarts when they are complete:

Error:unknown filesystem

Grub Rescue>

Workaround:

Http://wenku.baidu.com/view/c71a1812cc7931b765ce1563.html, it's a force!

My specific steps;

To view partitions:

Grub Rescue>ls

....

Find Ubuntu Partition:

Grub Rescue>ls (HD0,MSDOS1)

Enter, if it is unknown filesystem continue to try the next partition

...

Grub Rescue>ls (hd0, Msdos8)

Find out, my Ubuntu is in (Hd0,msdos8).

To modify the boot partition:

Grub rescue>root= (HD0,MSDOS8)

Grub Rescue>prefix=/boot/grub

Grub Rescue>set root= (HD0,MSDOS8)

Grub Rescue>insmod Normal

Here if everything is OK, continue, otherwise the Ubuntu partition is not correct, first find good before continuing.

Grub Rescue>normal (Enter boot menu)

Press C to enter the command line mode:

Grub>set Root=hd0,msdos8

Grub>set prefix= (HD0,MSDOS8)/boot/grub

Grub>linux/vmlinuz root=/dev/sda8 (Can press TAB to auto-complete/vmlinuz)

GRUB>INITRD/INITRD.IMG (Can press TAB key to complete/initrd* automatically)

Grub>boot

Go to Ubuntu Repair Grub:

sudo update-grub

sudo grub-install/dev/sda//rebuilding grub to the first hard disk MBR

Restart, ok!

http://blog.csdn.net/wangyuchen890119/article/details/7338022

Reprinted Error:unknown filesystem Grub Rescue>