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1. HOWTO Restore GRUB
   11 months ago by spirit and saved by 1 other
   1. # Boot on a live CD and open a console. sda1 is supposed to be the partition containing the OS
   2. # 1/ Restore GRUB
   3. mount -t proc none /dev/sda1/proc
   4. mount -o bind /dev /dev/sda1/dev
   5. chroot /dev/sda1/ /bin/bash
   6.  
   7. /usr/sbin/grub
   8. grub > root(hd0,0)    # 0->a, 1->b ...      #1->0, 2->1 ...
   9. grub > setup(hd0)
   10. grub > quit
   11.  
   12. # 2/ Check if partition is bootable
   13. fdsik /dev/sda
   14. fdisk > p      # print the partition table
   15. fdisk > a      # toggle a bootable flag
   16. fdsik > 1
   17. fidsk > w
   18.  
   19. # 3/ Reboot !! That's done
   bashfdiskgrublinuxrestore
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