How restore grub2?07.12.13

1. boot the ubuntu LiveCD 2. Open a terminal and type sudo fdisk -l This list the partition tables, and in my case root (/) partition is on /dev/sda9. 3. Mount that partition using following command. sudo mount /dev/sda9 /mnt 4. Run the grub-install command as below. This will reinstall the grub 2 sudo grub-install --root-directory=/mnt /dev/sda Here "sda" is the hard disk on which your Linux distribution is installed! 5. Reboot 6. Finally Refresh the grub 2 menu using following command sudo update-grub 07.12.13

http://kasunweranga.blogspot.com/2011/07/reinstall-grub2-after-installing.html

if you cannot install it because you get This GPT partition label has no BIOS Boot Partition; embedding won't be possible!. /usr/sbin/grub-setup ........... try root@debian:~# parted /dev/sda (parted) unit MB (parted) p free Model: Areca ARC-1210-VOL#00 (scsi) Disk /dev/sda: 4000000MB Sector size (logical/physical): 512B/512B Partition Table: gpt Number Start End Size File system Name Flags 1 0.02MB 4000MB 4000MB linux-swap(v1) 2 4000MB 4300MB 300MB ext3 boot 3 4300MB 104300MB 100000MB ext3 104300MB 4000000MB 3895700MB Free Space (parted) mkpart primary 104300 104400 (parted) p Model: Areca ARC-1210-VOL#00 (scsi) Disk /dev/sda: 4000000MB Sector size (logical/physical): 512B/512B Partition Table: gpt Number Start End Size File system Name Flags 1 0.02MB 4000MB 4000MB linux-swap(v1) 2 4000MB 4300MB 300MB ext3 boot 3 4300MB 104300MB 100000MB ext3 4 104301MB 104400MB 99.6MB primary (parted) set 4 bios_grub on (parted) q Information: You may need to update /etc/fstab. root@debian:~# partprobe /dev/sda root@debian:~# ls -l /dev/sda* brw-rw-rw- 1 root root 8, 0 Jul 12 19:02 /dev/sda brw-rw-rw- 1 root root 8, 1 Jul 12 19:02 /dev/sda1 brw-rw-rw- 1 root root 8, 2 Jul 12 19:02 /dev/sda2 brw-rw-rw- 1 root root 8, 3 Jul 12 18:51 /dev/sda3 brw-rw-rw- 1 root root 8, 4 Jul 12 19:02 /dev/sda4 07.12.13

http://velenux.wordpress.com/2012/07/12/grub-failing-to-install-on-debianubuntu-with-gpt-partitions/

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