I can no longer boot Ubuntu following a corruption problem initially reported here (How do I solve the "invalid arch dependent elf magic" error message).
When I power my laptop, I now get the following message:
GNU GRUB version 2.02~beta2-9ubuntu1.7 Minimal BASH-like line editing is supported. For the first word, TAB lists possible command completions. Anywhere else TAB lists possible device or file completions." and then the prompt grub>
Can anyone help me get back to Ubuntu ?