(SOLVED) Big Sur with Opencore on Asus X99 Deluxe

[rvilbert]

Good afternoon,

I'm trying to install Big Sur beta 8 using Opencore on X99.

I have created my USB Install drive and I have setup my EFI and associated files including SSDT files and patches but i get stuck in the boot process.

In summary, i get stuck at apfs_module_start.

Could you let me know what i have done wrong please?

I have attached;

• Error boot screen
• EFI folder
• my origin folder
• my IOReg file

Let me know if you need further details.

Thanks a lot

 

Big Sur Boot Screen Error.jpg.zip EFI - OC Big Sur X99 Deluxe.zip origin.zip X99 iMac Pro.ioreg.zip

[MaLd0n]

try with pci patch for x99. many mobos need it

https://www.insanelymac.com/forum/topic/341477-open-core-kernel-kext-patch-for-x99x299-motherboard/

[rvilbert]

Thank you Mald0n.

I tried but now I'm stuck at PCI Configuration begin.

I've attached the boot screen and my EFI with updated config. 

Let me know if you see anything weird.

Thanks

IMG-5629.jpg.zip TEST OC - EFI 30 SEPT 2020.zip

[MaLd0n]

try these options

[rvilbert]

Thank you Mald0n for your help.

At last i managed to boot with Opencore on Catalina also thanks to @jmacie who shared with me his config.plist. Unfortunately it did not work on Big Sur. I ended up with a Kernel Panic .... 

I have attached my config.file in case someone needs some help (Catalina 10.15.6 / Opencore 0.6.1 Release / Asus X99 Deluxe / i7 5960x / Radeon RX 570)

I believe i will have to keep digging for Big Sur.

Thanks a lot!

config.plist.zip

I share also my boot screen with KP in case someone has any bright idea and know how to fix this.

Thanks!

IMG-5630.jpg.zip

[MaLd0n]

ye. big sur is a problem for some hardware

try with fakesmc instead virtualsmc

[rvilbert]

Thanks Mald0n but unfortunately I get the same KP which is linked to IOPCIFamily.

 

[MaLd0n]

k

need wait some time bro

if i found solution ill post here

[rvilbert]

Brilliant! Thank you. Fingers crossed. 

 

 

[MaLd0n]

 

[rvilbert]

Hi Mald0n

I hope everything is ok.

i have continued my quest to install Big sur on Opencore and i believe i'm almost there but i get stuck on a grey screen with my mouse pointer just before i can see the installer screen.

I thought that was linked to VirtualSMC which I replaced by FakeSMC but same issue.

I also declared my graphic card in config.plist as i thought it could come from there but that's not the issue (Radeon RX 570).

Would you mind having a look at my config please as i have scratching my head for some time now.

I have attached my EFI folder and my ioreg extract. Let me know if you need anything else.

Thanks a lot

OpenCore 0.6.2 for X99 BIG SUR.zip X99 iMac Pro.ioreg.zip

[rvilbert]

Hi Mald0n,

I have continued digging and tried with / without some kexts and i have still not been able to reach the installer but i get stuck at the apple logo and at roughly 90% completion in the progress bar. Not sure if this is helpful but here is my opencore config file.

Any idea would be much appreciated.

Thanks

R

config.plist.zip

I'm wondering whether it is the graphic card but it should be fully recognised (Radeon RX 570)...

[MaLd0n]

try this folder

EFI.zip

reset nvram first time

[rvilbert]

Hi Mald0n

Thank you for your reply and help which allowed me to made some progress. I have used your EFI and SSDT which I had to tweak as a device was not well defined and i had to include some of my other SSDT to be able to boot.

I managed to get to the installer and to start the install but roughly at 12 min remaining there is a crash and my computer restarts.

It looks like it is coming from Diskarbitration as it sent a kernel SIGKILL.

I saw in your EFI that you have a DiskarbritrationFixup.kext but it does not look like it is doing anything as i have tried with and without it.

Any idea of where this could be coming from?

I have attached the EFI i have been using for this.

Thanks a lot! 

 

EFI.zip

[MaLd0n]

u have a catalina system? we can prepare a good folder with catalina and after try boot into bs

[rvilbert]

Yes i do have Catalina 10.15.7 which boots with opencore 0.6.2.

Just so you know, I have try to install Big Sur from Catalina but at the first reboot i get to the Apple logo of the installer and then after roughly 10% of completion, the computer restarts with i think an error. When i try to go back again I always end up with the same reboot at the same point.

When i install from the USB drive, i end up at the same stage. After the first reboot i get to the apple logo and same thing a reboot after 10%.

Cheers 

 

[MaLd0n]

try

EFI.zip

[rvilbert]

Hi Mald0n

Unfortunately i end up with the same issue. I have made a video of the issue so you can see which i sent via Telegram.

Let me know if you have any idea.

Thanks a lot

[MaLd0n]

i see this video. use boot key and boot many times. bs we need reboot many times. is not like old installers

[rvilbert]

Just to close this topic, I have managed to install Big Sur using the following:

https://www.olarila.com/topic/9063-guide-installrestore-bigsur-with-clover/

Thank you @MaLd0n for all your help.

For people who are still struggling with Big Sur on Asus X99 please feel free to get in touch.