I am trying to install Ubuntu on a Sony Vaio model PCG-FX501 . I have created several iso images but they can only be written to a DVD as I use Nero. ( because of the size of the file). Non will install and the install hangs without any error messages . The PC originally had XP professional installed. An attempt at changing partitions managed to completely screw up the XP boot but I have managed to reformat the partition to ntfs and the instal of Ubuntu starts but does not complete. Does the install media have to be a CD and if so how can I achieve it please.