Lenovo z51-70: graphics acceleration for AMD R9 M375 GPU

[navin56]

Hey guys 
I was able to extract the v-bios file from the bios update. Any pointers on what i can do to help ?
Here's the attached file.

 

https://drive.google.com/open?id=0B2OBFMdjlFjcM2NoTFNWbTFHYWs

[Jake Lo]

File is not UEFI volume.

Also Lenovo BIOS are locked/encrypted, you won't be able to modify it.

You'll just have to use the patch bypass the DMVT Pre-Allocated check

[ypdeveloper]

Hey Naveen can you please explain how you extract this bios or which tool you use .

So I can extract latest v bios from bios version 2.02

[ypdeveloper]

Hello friends i can successfully changed advanced bios setting but the problem is i unable to manage to make AMD gpu as primary to make it workable in osx so anyone if know about the setting i need to change in advanced bios menu please contribute here

[Darren Porter]

Each Time i run the installer with every bootleg I can think and combination thereof, I can not get past the IOGraphic x43 hang.
I have the Lenovo z51 and followed every single guid, tried everything.

This laptop has switchable graphics AMD R9 and Intel HD5500

The bios is locked and allows me to select UMA graphics option and nothing else.

I can see this laptop is compatible, can you help just get to the installer at least.

Can I have a DSDT/SSDT to replace or just the EFI folder for this laptop , anyone help?

 

 

[Allan]

Hello @Darren Porter, welcome to OSXLatitude.

 

Boot with: -v nv_disable=1 -disablegfxfirmware