I wanted to try out the Burg boot loader, so I typed in the following commands: sudo add-apt-repository ppa:ingalex/super-boot-manager sudo apt-get update sudo apt-get install burg That was just slowing down my boot, and I didn't have any control about the ubuntu recovery manager, besides, it was booting up ubuntu safe mode. I re-installed grub2 by entering: sudo mount /dev/sda5 /mnt sudo grub-install --root-directory=/mnt /dev/sda That didn't work too well... It ended up making my machine put up a grub command line. I'm trying to restore the grub OS choice menu, but don't know the commands to do that.
Try this for the second command:
sudo grub-install --boot-directory=/mnt/boot /dev/sda
And you're sure your Ubuntu is on sda5, I assume. Use
sudo fdisk -l
to be sure.
I also assume you're running this from a LiveCD.