I would install linux and Windows 8 in dual boot on Toshiba satellite z930. I follow the tutoriel http://denisrosenkranz.com/mettre-en-place-un-dual-boot-Windows-8-ubuntu-12-04-lts-avec-easybcd/ . When I restart my computer. I can start Windows 8, but if I want to start Linux, I have the message : "Window faild to start. To fix the problem : [...] File : \NST\AutoNeoGrud2.mbr Status : 0xc000000f info : The application or operating system couldn't be loaded because a required file is missing or contains errors.". The file C:/NST/AutoNeoGrud2.mbr exists. I make a test with Linux secure 13.04 64 bits and obtain the same result.