Hi there, thanks for the reply.
You will notice that Lilo is installed on sda. This is because a short while ago I accidentally replaced my Windows MBR with Grub but it wouldn't boot Windows from there, so I used Lilo to rectify this issue. Also sdb has now been relabeled to sde (though I'm not entirely sure why). You will also notice that I'm using Mint at present. That is simply because I hoped that attempting a distro other than Ubuntu may work; though I was clearly wrong.
Thank you for your help.