Install grub legacy to replace grub2 on Ubuntu 11.04

[Ryan Chan]

Hello,

For some reason, I need to use grub instead of grub2, when I finished
the following, the Ubuntu 11.04 failed to boot, anyone mind telling
what wrong with my steps?


Setup consists of 2 machines (VM):

1. Ubuntu 8.10, using grub legacy
2. Ubuntu 11.04, using grub2


Steps:

1. Shutdown the 11.04 VM, mount the Ubuntu 11.04's disk inside Ubuntu
8.10. as device /dev/sdb1, mount point is /mnt/test
2. Run the command: sudo grub-install --root-directory=/mnt/test /dev/sdb
3. Umount the 11.04's disk and boot up the Ubuntu 11.04 with the new grub
4. The machine failed to boot with no error.


Any idea?

Thanks.