Hi I have a Lenovo m720q and im trying to enable 4g decoding to use it with an Arc card.
My understanding is Lenovo bios’s are locked down so I can’t use ReBarUFI unless I have a physical tool to flash it.
So im exploring using setup_var.
I’m attempting to follow this guide to find the offset.
I found the following text which I believe is the pertinent value to enabling the feature:
> SuppressIf
> EqIdVal QuestionId: 0x2746, Value: 0xF
> OneOf Prompt: "Above 4GB MMIO BIOS assignment", Help: "Enable/Disable above 4GB MemoryMappedIO BIOS assignment
>
> This is enabled automatically when Aperture Size is set to 2048MB.", QuestionFlags: 0x10, QuestionId: 0x54, VarStoreId: 0x1, VarOffset: 0xA49, Flags: 0x10, Size: 8, Min: 0x0, Max: 0x1, Step: 0x0
> OneOfOption Option: "Enabled" Value: 1
> OneOfOption Option: "Disabled" Value: 0, Default, MfgDefault
> End
> End
I’m having trouble constructing the exact command to run this, particularly the name variable.
I think this is the right command but can someone here verify?
setup_var.efi 0xA49 0x01 -s 0x08 -n “Setup” -i 0x01