Hi.
can edit the bios to make above 4G enabled by default?
i mean always on because some times its disabled accidently while rebar still on
so i faced black screen with long BeeB and can not boot until reset bios default
Heya! Iâm a little confused 
watching whatâs being posted here. Iâm wondering what are the next steps to take ReSizeBar feature? In GPU-Z it is disabled but 4g decoding I noticed that it is enabled which is good I say. I have no idea if I need to do anything something additional for 4G decode
Help me please. I do this work for xfx rx580 8gb.
To check if Above 4G Decoding is enabled, you could see it on Device Manager > View > Resource by Type > See if there is Large Memory tab like this:
If it is there, then you could run Rebarstate.exe as Admin, then type 13 and enter it to make the dxe assign 8GiB on rebar.
You have to make sure that CSM is disabled + Above 4G Decoding is enabled (Large Memory present in Device Manager) before doing so or else youâll get a black screen.
This is what I recive.
CSM is disabled. I dont see anything about ReSizeBAR, C.A.M/S.A.M enable/disable in biosâŚ
In gpu-z 4g decode is enable but re-size bar is disable.
When i type unlimited or 13 and reboot⌠mb still beep per seconds⌠When i type 11 on rebarstate after reboot. very slowly booting it entered my bios without pressing anything after booting and I couldnât use the mouse and keyboard. Everytime need to clear cmosâŚ
Try to clear rebar state to 0 again, flash stock bios, re flash my modded bios, disable csm and for additional measure, install secure boot keys, enable secure boot, and make sure the secure boot is at User/Custom state rather than Setup. Then use the efigrub method i mentioned in this post, then after everything succeed, boot to windows, use the Rebar Legacy on.reg if you enable rebar using that registry, or just manually do it from the source you download it, reboot, then make sure bar size is 256. After everything is done, run rebarstate as admin and type 13 (since 2^13 is 8192 = 8GiB) and enter, reboot normally, and see if it works.
I think i could make another identical bios since i forgot what did i do before, and probably testing if i could make PCI Subsystem Settings menu appear and Above 4G Decoding appear just for easy access instead using grub method, but i wont do it today since i am pretty busy with my studies (it took me abt 2 hrs to make a bios since im not that keen on remembering what i did if it have alot of words and stuff)
If everything succeed, make sure Resizable Bar toggle is enabled in Adrenaline Menu > Performance > Tuning, and on GPUZ > Advanced > Vulkan there is no 256Mb memory (If rebar is working properly, Memory 2 and 4 (Host Visible, Host Coherent) usually assigned near 8GiB, no 256MB is shown).
I do.
âKMD_EnableReBarForLegacyASICâ=dword:00000001
âKMD_RebarControlModeâ=dword:00000001
âKMD_RebarControlSupportâ=dword:00000001 .
After I did this and restarted i see RebarControlMode switch to 0. 
try to flash normal bios (but disable rebarstate first), then flash the new bios, after flash go to bios, disable csm, then go to Advanced > PCI Subsystem Settings and enable 4g decoding, then save and exit.
Bios: Z97AVRbar.rar (5.5 MB)
I do. It s works with 1GB⌠2GB or more⌠cant booting.
1st step after reboot⌠to verify status. all settings bydefault 256mb â Postimages
2nd time i was so confused when i see it worksâŚ
3rd time add more hoursepower⌠and it s maxim what i can do it.
Screenshots here Album â Postimages
In bios i cant find anywhere where is 4G to enable
What is new is PCI Latency⌠can up to 512 bus clock
Ty so much for your time. I think most likely it worked with the other bios uploaded from u as well but my system/graphic card cant do it.
Are you sure you did flash this exact bios, not any previous bios i posted here? Because i thought PCI Subsystem Settings would appear in Advanced options, not in any Advanced sub menu, directly on Advanced menu and PCI Subsystem Settings Sub menu.
As for the gpu, what is your gpu? Maybe send a gpuz screenshot for it?
Ty!
I saw it last night when I got home. Thatâs right. I activated 4G from there and was able to give unlimited. bios â Postimages
We also saw some new settings in bios. What settings u recommand to enable/disable for pcie?
Any suggestion some drivers for bifurcation & pcie boot does it matter much?
My GPU specs.
I would leave it as is, since i only make those options appear, so feel free to experiment.
I think bifurication isnât possible here since there is no other x16 slot
H97 and Z97 have native NVMe support for booting, so buy any adapter for nvme and youâll be fine for nvme booting, but youâre limited to x1 anyways.
hi my old friend, i need ur help again: because i replaced my mobo and get Asus z97-A i need to mod the bios to enable Rebar - the bios link:
https://dlcdnets.asus.com/pub/ASUS/mb/LGA1150/Z97-A/Z97-A-ASUS-3503.zip?model=Z97-A
thanks man
using the new V3 rebar module