Thanks that helped me !
I found a pattern of 4A 10 59 7B 0D C0 58 41 87 FF F0 4D 63 96 A9 15 (don’t know what is is)
FormId (invert HEX) and a list of 00 before the next pattern
So, I added the Chipset section (invert HEX) which the FormId can be found in the UEFI Editor, or IFR text.
Now the Chipset section is in the BIOS.
But I have one more question.
Following your instructions the allowed list start at FD5F0 and the blocked at FD7C0.
But the Form ID 27 10 is the Setup menu and think it is allowed, or am I wrong?
And how can you find how start allowed and blocked parts ?
Is it this separator ?
Thanks in advance for your reply