Stalling on Big Sur boot

[freber]

The adventure continues to get Big Sur to install and boot.

After successfully getting through the first step of the installation now I struggle with the second part that comes after a restart. I believe Big Sur is trying to boot properly this time but stalls on the point. EXITBS:START Logs looks like this

89:289 00:056 AAPL: #[EB|CSR:OUT] 0x000003E7
89:347 00:057 AAPL: #[EB.BST.FBS|+]
89:403 00:056 AAPL: #[EB|GIP:PHS.1] Boot 1
89:461 00:057 AAPL: #[EB|GIP:PCT] 0x2
90:168 00:707 AAPL: #[EB|GIP:PHS.2] Boot 1
90:226 00:057 AAPL: #[EB.BST.FBS|ADSZ] 0
90:282 00:055 AAPL: #[EB.BST.FBS|KSSZ] 0
90:338 00:055 AAPL: #[EB|SB:SBGMFNS] x86legacyap.im4m
90:394 00:055 AAPL: #[EB|RH:PF] usr\standalone\OS.dmg.root_hash
90:449 00:055 AAPL: #[EB|RH:MF] <"usr\\standalone\\OS.dmg.root_hash.x86legacyap.im4m">
90:505 00:055 AAPL: #[EB.LD.LF|IN] 0 1 <"usr\\standalone\\OS.dmg.root_hash"> <"0">
90:562 00:056 AAPL: #[EB.LD.OFS|OPEN!] Err(0xE) <"usr\\standalone\\OS.dmg.root_hash">
91:270 00:708 AAPL: #[EB.RH.LRH|P!] Err(0xE) <- EB.LD.LF
91:327 00:057 AAPL: #[EB.BST.FBS|!] Err(0xE) <- EB.RH.LRH
91:383 00:056 OCSMC: SmcReadValue Key 4D535463 Size 1
91:439 00:055 OCSMC: SmcReadValue Key 4D534163 Size 2
91:501 00:061 AAPL: #[EB.B.WFDW|!WF] Err(0xE) 0
91:558 00:056 AAPL: #[EB|LOG:DT] 2020-10-12T09:47:19
91:623 00:064 AAPL: #[EB|LOG:EXITBS:START] 2020-10-12T09:47:19

I verified that CFG-LOCK is disabled and my BIOS settings are correct. Starting to get a bit clueless on how to move on.

Any advice or suggestions are appreciated!

[malibio]

I've been able to install Big Sur. So, I can attest to it that it works. However, the way I did it is via the upgrade path (installing it from a running Catalina). It then booted up into the macOS Installer (as the default selection under OpenCore boot menu).

[SchmockLord]

https://dortania.github.io/OpenCore-Install-Guide/troubleshooting/extended/kernel-issues.html#stuck-on-eb-log-exitbs-start

Have you successfully installed Catalina before you start to install Big Sur Beta?

Because I wouldn't recommend starting with a Beta OS. And as @malibio says, I would update from Catalina to Big Sur Beta.

[fidalgodev]

I've been able to install Big Sur. So, I can attest to it that it works. However, the way I did it is via the upgrade path (installing it from a running Catalina). It then booted up into the macOS Installer (as the default selection under OpenCore boot menu).

How stable is it? I use this machine as my main machine to work. But i'm so tempted...

[malibio]

I've been able to install Big Sur. So, I can attest to it that it works. However, the way I did it is via the upgrade path (installing it from a running Catalina). It then booted up into the macOS Installer (as the default selection under OpenCore boot menu).

How stable is it? I use this machine as my main machine to work. But i'm so tempted...

It's very stable, from what I've seen. I did, however, have to go back to Catalina because there were some (minor) services that weren't available yet. Namely, for some odd reason, there's an Apple Music station I listen to that won't play. There were a few others, but don't recall. I believe in time, Apple will iron them out. Until then, I can wait.

If I were you, I'd try cloning your stable Catalina environment, upgrade to Big Sur, then rollback if you aren't happy with Big Sur.

[fidalgodev]

I've been able to install Big Sur. So, I can attest to it that it works. However, the way I did it is via the upgrade path (installing it from a running Catalina). It then booted up into the macOS Installer (as the default selection under OpenCore boot menu).

How stable is it? I use this machine as my main machine to work. But i'm so tempted...

It's very stable, from what I've seen. I did, however, have to go back to Catalina because there were some (minor) services that weren't available yet. Namely, for some odd reason, there's an Apple Music station I listen to that won't play. There were a few others, but don't recall. I believe in time, Apple will iron them out. Until then, I can wait.

If I were you, I'd try cloning your stable Catalina environment, upgrade to Big Sur, then rollback if you aren't happy with Big Sur.

What do you recommend to clone? I try to connect another disk, use MacOS Disk Utility to Restore the new DISK from my current MacOS Installation disk, but I always get an error...

[malibio]

This guy did a really good step-by-step tutorial of how to go about doing a clone:

https://www.youtube.com/watch?v=w9CbyjL7HFk

I've learned so much from him.

[freber]

Thanks for the feedback and suggestions. I've been trying to figure out and use the debug version of OpenCore to sort it out as suggested in the OpenCore documentation. Thanks anyway for pointing it out @SchmockLord!

I've successfully installed Catalina now which feels good I guess.. Will try to update now :)

[freber]

Tried to install Big Sur Beta (001-51046 - 11.0 macOS Big Sur Beta) and things looks good until second reboot where I end up in a kernel panic.

Tried

RebuildAppleMemoryMap -> No
SetupVirtualMap -> Yes

without any success :( actually, when changing these variables I get kernel panic even earlier.

Any tweaks you guys did to the config to get Big Sur to run? I'm using the same hardware except that I don't use any external GPU.

[freber]

Tried the nightly build of OC 0.6.3 and suddenly it worked. Believe it was related to allocating enough memory for the kernel which apparently is larger in Big Sur.