Lenovo G480 native win8 can't install win7, and winload.efi can't verify the digital signature. What should I do? Does it have anything to do with uefi and hidden partitions?
This startup disk you made with a U disk or CD formatted with a C disk, the size of the hidden partition is about 15G. That's a backup of win8, which can be restored with one click. This has nothing to do with the system you installed. If one day you want to use the original win8 system, you can restore it directly, but I envy you that you have the original win8 system, and my pirated win8 activation cannot be fully activated.