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macOS 11 Big Sur on Unsupported Macs Thread
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thank you for the direct link to install assistant I used this image and its running great.
Yep, that explains greatly. Thumbs up.
Hi I installed Big Sur final release on my Mac Pro flashed 5,1 using BigMac method. Everything works like a dream. I installed it on a nvme along side Mojave on another nvme. My problem it when I restart my Mac using startup disk back into Mojave I lose the option of restarting my Mac back into Big Sur (the startup disk is no longer there for Big Sur). any solutions?
If you used the micropatcher, need to boot again on the USB EFI that will setup your nvram correctly. Then can boot BigSur back. I think you can't boot back into an older OS after the mod. Something in these lines.
Please, please add now your hardware to your signature and please check out the special MacPro threads. This is unlikely a Big Sur patcher issue at all.
This is not the stop sign issue, he lost the connection to his second NVME somehow. There are posts about not installing the OS to theses devices ...I do not know where and why.
@jackluke @Barry K. Nathan have you heard about SUPPORTED macbook Pro 2013 and 2014 bricked by Big Sur 😂 Your patchers are better than the official installer 😜 https://www.theverge.com/2020/11/16...ror-macbook-pro-2013-2014-models-black-screen
This appears to be exactly the same symptoms which I got on my unsupported late 2012 13" MBP - which would make sense since, after upgrading the WiFi card, I understand it has exactly the same hardware as the supported machines which are also failing.
@jackluke & @Barry K. Nathan (apologies if this has been discussed above, I've done some searches, but haven't read every single post on the 30-odd pages since I was last on here about a week ago!) and others who were interested, this sounds to me very much as if the issue I had *wasn't* cross-flashing after all, and more that it was the correct flash which was applied to my machine, but there is then some problem with how the flash is applied which makes machines from that era (including some supported machines, doing a supported install of Big Sur) hang at a black screen after power up, at least until you remove the battery long enough to reset ... something.
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Hello Hello,
Thanks for the great job you do!
I have a problem I tried an installation on my iMac 13.2 and unfortunately once the installation is complete I think correctly I am encountering a boot loop with a kernel panic. I am stuck after step 14.
Thanks for your help
Thanks for the great job you do!
I have a problem I tried an installation on my iMac 13.2 and unfortunately once the installation is complete I think correctly I am encountering a boot loop with a kernel panic. I am stuck after step 14.
Thanks for your help
Having realised that this problem does not just affect people faking their machine id using @jackluke's extremely useful sideloader, but also affects completely normal installs on officially supported MBPs, I have just posted on the 'macOS Big Sur Update Bricking Some Older MacBook Pro Models' thread what (from my own experiences, already reported on this thread) seems very likely to be a genuine fix for the black screen problem, on both supported and unsupported MBPs.
Namely: completely remove power to the circuit board briefly, by disassembling, disconnecting the battery, and then holding the power button for 5 seconds (even though the batteries of these machines are not officially removable, this is simply the approach for Macbooks with removable batteries at https://support.apple.com/en-gb/HT201295).
I am currently pretty hopeful that this would fix the problem on supported MBPs just as well as it did on my unsupported MBP from basically the same era.
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It’s just wierd, when i boot back into Mojave the big sur disks are on my desktop just on in the startup disk option in system preferences but when I boot into recovery mode the big sur disk is in the start up disk option. I’m going to see if i can boot from it under recovery
I tried to restart big sur in recovery mode and said it was unable to boot due to volume not being blessed
Yesterday I had problems with my external USB disk, so I will start over with a new one. Anyway I'm quite sure I erased the external disk using Catalina. I'll be back soon.
I have successfully installed current Big Sur (20B29) on 2010 iMac 11,3 using OpenCore but still seeing two issues.
1. After cold power restart, Bluetooth mouse is not seen. I have to use USB mouse to open Bluetooth preferences and connect the Bluetooth mouse. After that it works fine until next power cycle.
2. Wifi works fine, but system does not see the Ethernet card. I have included the CatalinaBCM5701Ethernet kext as per instructions. System Info says there is no PCI Ethernet card installed.
I have tried searching this thread, but can only find info about wifi ethernet, which works fine for me, but nothing about wired ethernet. Have I missed something?
1. After cold power restart, Bluetooth mouse is not seen. I have to use USB mouse to open Bluetooth preferences and connect the Bluetooth mouse. After that it works fine until next power cycle.
2. Wifi works fine, but system does not see the Ethernet card. I have included the CatalinaBCM5701Ethernet kext as per instructions. System Info says there is no PCI Ethernet card installed.
I have tried searching this thread, but can only find info about wifi ethernet, which works fine for me, but nothing about wired ethernet. Have I missed something?
Hello,
[I have first post in a wrong thread ,
, i repost here in the good thread here ]
on my Imac 27 " mi 2011 I have changed my graphic card with a Dell WX4130 an I have installed Catalina with dosdude1 patch and Catalina Loader 0.6.2 , all is OK (you can see my post here) and SIP is disabled.
Now , I try to install Big Sur on a SSD USB disk with micropatcher.
I create the USB key without error message with the last Big Sur package:
When I boot (with my SD card "Catalina loader 0.6.2"), i have the 2 icons "Install macOS Big Sur" and "EFI Boot". I select the "EFI Boot" and the iMac power down .
I reboot and i select the "Install macOS Big Sur" and i have the prohibited/no-entry sign (circle with a line). As described, i try 4 or 5 times to reboot with "EFi Boot" but each time after, I have the prohibited/no-entry sign for "Install macOS Big Sur".
do i have to reboot efi more times or does anyone have an idea of the problem ?
Thank you for your help,
I first post on a bad thread, I have the answer from @Ausdauersportler , I try this afternoon
"Try to use another config.plist (NVIDIA) on the Catalina Loader and move possible in to 0.6.3. This will give you the boot screen, but does not spoof the iMacPro1,1 ID. You can change back to the AMD config after installation and patching, in fact you have to change back or there will be no screen output."
Serge
[I have first post in a wrong thread ,
, i repost here in the good thread here ]on my Imac 27 " mi 2011 I have changed my graphic card with a Dell WX4130 an I have installed Catalina with dosdude1 patch and Catalina Loader 0.6.2 , all is OK (you can see my post here) and SIP is disabled.
Now , I try to install Big Sur on a SSD USB disk with micropatcher.
I create the USB key without error message with the last Big Sur package:
When I boot (with my SD card "Catalina loader 0.6.2"), i have the 2 icons "Install macOS Big Sur" and "EFI Boot". I select the "EFI Boot" and the iMac power down .
I reboot and i select the "Install macOS Big Sur" and i have the prohibited/no-entry sign (circle with a line). As described, i try 4 or 5 times to reboot with "EFi Boot" but each time after, I have the prohibited/no-entry sign for "Install macOS Big Sur".
do i have to reboot efi more times or does anyone have an idea of the problem ?
Thank you for your help,
I first post on a bad thread, I have the answer from @Ausdauersportler , I try this afternoon
"Try to use another config.plist (NVIDIA) on the Catalina Loader and move possible in to 0.6.3. This will give you the boot screen, but does not spoof the iMacPro1,1 ID. You can change back to the AMD config after installation and patching, in fact you have to change back or there will be no screen output."
Serge
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I add other tips if you eventually after stage3 installer encounter that: "apfs_get_firmlink_target_vnode"
Code:
from Catalina:
diskutil list
(locate your BigSur diskXs2)
diskutil mount diskXs2
sudo bless --folder /Volumes/Preboot/*/System/Library/CoreServices --label "Big Sur"
sudo rm /Volumes/Preboot/*/System/Library/CoreServices/PlatformSupport.plistAfter stage3 (made of some auto reboot), only when encounter bootloop kernel panic, apply these fixes:
"Install OpenCoreAPFSloader3" , from its opencore text menu "Restart fix" to try booting without opencore, you need to apply "BigSurFixes Legacy USB patches" from Utilities.
Or using OpenCoreAPFSloader, select "BaseSystem fix installer", then from Utilities apply:
"BigSur stage3 installer fix"
"BigSurFixes Legacy USB patches" (that includes also Sound, wifi, telemetry and snapshot booting)
"BigSurFixes iSight camera fix" (that includes also Nvidia framebuffer)
then reboot again the "BaseSystem fix installer", from Utilities apply "BigSurFixes opencore Preboot".
Try booting BigSur through OpenCoreAPFSloader3 , if you have an APFS rom patch you can even skip using opencore through "Restart fix" button.
@Barry K. Nathan
MacBookPro9,2, MacBook Pro (13-inch, Mid 2012), Micropatcher 0.5.2pre update to 11.0.1 (20B29) using full installer. No issues. Softwareupdate reports no new updates found instead of error. Cheers!
MacBookPro9,2, MacBook Pro (13-inch, Mid 2012), Micropatcher 0.5.2pre update to 11.0.1 (20B29) using full installer. No issues. Softwareupdate reports no new updates found instead of error. Cheers!
Just out of curiosity: Did you use the micro patcher?
Bluetooth:
Yes, I can confirm bluetooth connections are coming back after reboot and sometimes get lost after sleep on 12,2. The Apple 2 BT keyboard currently works only with USB cable connected. The mouse only after reboot until first sleep.
After reboot the keyboard works via BT and cable. Guess I have to send it to sleep, again.
Ethernet:
Is working fine with micro patcher 0.5.1 (and older) installation on all iMac 11,x and 12,x.
Wifi:
Stable with 5 and 2.4GHz using a BCM94360CD/BCM943602CDP and also working with the original Atheros card.
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OK, I have a Mac Pro 3,1 that hasn't worked yet and I have a USB Bluetooth adapter that I can remove for this exercise. How are you using both BigMac patcher AND Micropatcher?
Just on a point of interest I have noticed that in Catalina on my mid 2012 rMBP with just About my Mac and Activity Monitor running the graphics in use is the integrated Intel HD4000 - shown below
However, with the same two apps in use on Big Sur the graphics in use is the dedicated Nvidia card, even though Activity Monitor reports that nothing running requires the dedicated graphics card - shown below.
Can I assume from this that graphics switching is not available for unsupported machines in Big Sur, even though the option is ticked in both power adaptor and battery settings?
It's not a problem - just an observation
However, with the same two apps in use on Big Sur the graphics in use is the dedicated Nvidia card, even though Activity Monitor reports that nothing running requires the dedicated graphics card - shown below.
Can I assume from this that graphics switching is not available for unsupported machines in Big Sur, even though the option is ticked in both power adaptor and battery settings?
It's not a problem - just an observation
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It seems @ribero's post no 3255 gave me the answer (thanks!).
I ran
sudo launchctl stop com.apple.displaypolicyd
and graphics switched back to Intel HD 4000 immediately.
Apparently that's still necessary after every boot.
A small price to pay
I ran
sudo launchctl stop com.apple.displaypolicyd
and graphics switched back to Intel HD 4000 immediately.
Apparently that's still necessary after every boot.
A small price to pay
Hi, I did the tips you suggested, but nothing changed. I installed BS on a new 250Gb external USB disk formatted as APFS by Catalina. Stage2 completed successfully (less than a minute lasted 55 minutes) and again stage3 failed bootlooping on "apfs_get_firmlink_target_vnode". Again when I applied the Legacy USB fix and the iSight fix no new snapshot was created with the same ARV error. The bless command didn't return any error, while removing PlatformSupport.plist returned that the file doesn't exist.
@jackluke ; @Ausdauersportler and all those who helped I thank you all for your kind support with your valuable inputs in getting the BigSur installation on unsupported Macs.
Apparently I got joy with my mid 2011 MacBook Air but got no luck with the iMac mid 2011. (iMac still requires me to use option key to select disk and does not star up in normal basis so I got errors when Bigsur tried to boot multiple times during install)
I may be lucky for the MacBook Air but graphics is not very good .If I click on Safari or open a pdf through preview app it takes ages and the window opens taking long time as if I its being dragged.
Even in dark mode letters are not very well visible and I can't see.
So I have decided to give up on BigSur for now and am going to be using Catalina which really works very well in both the machines.
thanks All.
Apparently I got joy with my mid 2011 MacBook Air but got no luck with the iMac mid 2011. (iMac still requires me to use option key to select disk and does not star up in normal basis so I got errors when Bigsur tried to boot multiple times during install)
I may be lucky for the MacBook Air but graphics is not very good .If I click on Safari or open a pdf through preview app it takes ages and the window opens taking long time as if I its being dragged.
Even in dark mode letters are not very well visible and I can't see.
So I have decided to give up on BigSur for now and am going to be using Catalina which really works very well in both the machines.
thanks All.
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