I am trying to install Ubuntu 12.10 on a new Laptop coming with Windows 8. I have read that only 64 bits are compatible with UEFI, so I tried the 32 bit and now the 64 bit. I disable the Secure Boot from bios, but still got the message "Check media [fail]". The CD (actually, physically a DVD) boot ok from other laptops or if I set the boot method to non-uefi (but then Windows doesn't - and that's my office laptop). Any solution? Is it a bug or I lost some info ?