[Problem] HowTo Extract DSDT tables from a Bios file?

BIOS/UEFI Modding BIOS Modding Guides and Problems
1

Hello i have been studying alot about this topic since i want to add sli support for the PROART B550 creator while learning alot in the process. Since i dont want to buy a whole new motherboard and waste money on the process . I have seen that there are two processes that people usually follow to achieve this : Using Clover bootloader and boot with a custom DSDT table or simply replace the DSDT table from the bios (if you know where is located) by replacing the whole body with the new compiled body. Unfortunatly all the guides that i found dont tell me how to identify the right image where the DSDT table is located in order to extract it using the UEFI tool.

Tool that i acquired:

  • acpibin
  • ACPIDUMP
  • acpiexec
  • acpihelp
  • acpisrc
  • acpixtract
  • AMIBCP 5.02.0031
  • AMIBCP 5.02.0034
  • AmiBoardInfoTool
  • HxD64
  • iasl
  • MMTool64
  • UEFIExtract
  • UEFITool
  • Xiasl


Edit by Fernando: Thread title customized and shortened

2

Have you already looked into >these< GitHub pages?

3

in a mean while i managed to obtain on a older bios the SLIC and i have modified mine to contain the string + method and tested on clover before modifying the bios file directly and this still not working. AIDA reports no certificate and still no option to enable on the driver side. It compiled fine and i selected on the options to boot from it .