Isto é o que esta discussão, "Mover arquivo de hibernação para uma unidade diferente" diz:
You can't relocate the HIBERFIL.SYS file to any partition other than the boot partition. This is because it's needed very early in to boot process to resume from hiberation and the boot loader (NTLDR) code, needing to be compact and optimized, doesn't have the ability to load the HIBERFIL.SYS from an arbitrary location.