Yesterday I suddenly couldn't start any new programs, then I tried a restart. But it would not start back up. I have already verbose booting enabled, efi is saying something like "cannot get file size info". When booting from a Mac install disk disk utility says it cannot repair this drive. Mount command says incorrect super block. Mount_hfs command says "invalid input". Any other way I can try repairing the superblock? Could it be a hardware fault? It is a kingspec 256GB ssd drive. Thanks !