Unable to access LL 2.8 on GRUB menu

[pauloz]

Thanks for your reply, however when it comes to "mounting, unmounting, partitions etc", I'm all at sea. I really need someone to respond directly to my problem with step by step instructions. I'm finding the threads provided confusing to follow and don't necessarily relate to my situation. It would appear there are a number of ways of going about rectifying and that is what concerns me. I hate to think of having to do a fresh install.