@Kuri0 I was reviewing the DSDT’s of the original bios without 4g decoding, Koekieezz and the AsRock modded bios and i have a couple questions. First of all, it looks like AsRock added similar DSDT fixes to the ones in the Github wiki, but not the same. The QWordMemory part is the same, only there is _Y0F in the last line, not _YAF like in the wiki. Should i change it to _YAF or leave it _Y0F? (Koekieezz left it as is)
Then things get more interesting with the M1LN part. There seems to be more stuff added than in the wiki. How should i properly edit this part? Should i simply replace everything after the M1LN = ((M1MX - M1MN) + One) line to what is in the wiki or its not that simple?
Above 4g decoding is working as it should now, no problems with booting. At first i tried 1024MB rebar size, then 2gb, 4gb and 8gb. All of them work. Havent tested much in gaming yet, but wife said that AC Valhalla is noticeably much smoother. Thank you @Kuri0, @Koekieezz and @68k-dude for being patient and helping.
PS I was thinking maybe my bios could be used to find a way how to add above 4g decoding to Z87 AsRock motherboards as well since i think nobody has succeeded to make this mod work on Z87
Congrats on your work and success, im sure that future and current forum users would appreciate it, if you could make a new post with your guidance regarding the REBAR on Z87 with no 4GB present, all the best.
@MeatWar id love to, but i have no idea what else AsRock added to the bios and how they implemented above 4G decoding that wasnt even there before at all. @68k-dude yeah, AsRock support is the best, they tried their best to add what i wanted to the bios for a 10 year old system and i have always used their motherboards and never had any major problems. And their new Nova motherboard seems to be a solid one for a good price, i hope theyll make a similar one for AMD as well.
that is great news karalux!! do you mind sharing your DSDT file? I would like to try this on my Asus Z87-A.
Update: Ah I just re-read the thread, and saw you mentioned that AsRock added the 4G decoding to the BIOS. Wish ASUS would have done the same when I asked the support team.
I have recently bought an intel arc A750 GPU and I want to use it with my secondary pc with Asus strix x99 & i7-6850k, but as you know without ReBar support that GPU won’t be utilized fully. I would really appreciate any help given.
Asrock Z77extreme9 CPU 3770k 32GB Memory Arc 770 16GB
Hi there,
Short in for what I am looking for : RBar + above 4G Modded Bios . The Mainbord already has Bios V1.90F with MVNe Boot support by Asrock via Card which works. I tried to install some ARC 770 learning RBar to be useful . I have added rebar.dxe to Bios and activated hidden above 4G option . The System runs in CSM deactivated . As soon as 4G is activated the System cannot longer boot and stucks with blackscreen Post Code B4 B2 . Suspected DSDT patch to be needed but extracting Errors are generated which I have read here to be ignored ) and that persists when recompiling after modding Memory size ( 36Bit), which fails to missing ssft . There my skills and modding-tools come to an end and help would be appreciated . Bricking is not a problem as some ch341 prommer is available.
Hello,
i try to enable resizable bar on a MSI Z170a Gaming Pro Carbon.
I do all the steps with uefi tool and add the rebardxe.ffs to my downloaded bios
But if i safe the file with uefi tool i become a .rom file
The original files name is E7A12IMS.1A0
If i rename the file from E7A12IMS.rom to E7A12IMS.1A0 the bios flash
doesnt work because there is nothing found in the flash tool The file does not appear or is not there.
If i leave it as it is .rom the same happens the file does not appear.
I’m working on my Dell G5 5090 to add Resizable BAR. I got the BIOS from my motherboard using Universal BIOS Backup Toolkit and then added ReBar with UEFITool. Here’s the Dell BIOS I started with: Dell BIOS link. I’m using this GitHub project: xCuri0/ReBarUEFI.
My problem is after modding the BIOS, Dell’s update system won’t accept it because it’s not the official Dell BIOS. Is there another way to get a BIOS that Dell will accept for updates?
