2

Possible Duplicate:
How can I repair grub? (How to get Ubuntu back after installing Windows?)

Hi installed W7 after Ubuntu 11.04, and it broke up my boot options, I followed this tutorial to restore boot loader: Recovering Ubuntu After Installing Windows. But when i run:

sudo grub-install --boot-directory=/media/5292fba2-f517-466d-a120-b8a61a97ca8a/boot /dev/sda2

I get this errors:

/usr/sbin/grub-setup: warn: Attempting to install GRUB to a partitionless disk or to a partition.  This is a BAD idea..
/usr/sbin/grub-setup: warn: Embedding is not possible.  GRUB can only be installed in this setup by using blocklists.  However, blocklists are UNRELIABLE and their use is discouraged..
/usr/sbin/grub-setup: error: will not proceed with blocklists.

Can somebody help me with this? thanks in advance.

Community
  • 1
Centurion
  • 123

2 Answers2

2

The guide do not say to use /dev/sda2: it is a partition.

You should install GRUB to the disk boot sector, I suppose in your case is /dev/sda.

enzotib
  • 93,831
2

Sometimes there are good reasons to install GRUB2 into a partition, not into the disk's MBR, e.g. when you have multiple operating systems on the disk. The 11.10 Kubuntu installer did install grub2 into a partition without problems, and I could boot-chain into it from the bootloader installed in the MBR. But when moving partitions around, one has to manually use grub-install.

The command is then:

sudo grub-install --force /dev/sda6
Yuv
  • 308
  • Had a dual boot on iMac with refit pointing to ubuntu partition, and need to install grub directly there. this did the trick! – Jobi Carter Dec 31 '12 at 01:16