Hi there recently i followed a tutorial on how to install ubuntu on external drive which used 11.4, but it worked for me on 12.10, It was working pretty fine, but I tried to Dual Boot it on my sumsang external drive with ubuntu 12.10 x64 the installation was fine and smooth. But The choice of choosing the OS to use only appears on the Computer which I installed but if I move to other computers, the Choose option does not appear. I really have no idea why it works fine on the computer i Dual booted from, but not the computer i didn't.
The main problem is I can't see the Option of Choosing which Ubuntu to use yet I installed both ubuntu 12.10 32 and ubuntu 12.10 x64 on my External Drive. Only the 32 one appears
Why does the Option appear only on the Computer which I Dual Booted them on my External Drive