macOS 11 Big Sur on Unsupported Macs Thread

[jackluke]

Ok. I am following your GitHub repo. 👍

Uploaded you could test the BaseSystem fix , if you have issues in continuing the stage2 macOS installer from opencore , then boot from "BaseSystem fix Installer" and apply "BigSur stage2 installer fix", that should proceed the 29 minutes remaining installing phase .

 

[air.man]

Hi @air.man! Very nice! Intel HD3000 remains without acceleration by all material shared here, if I understood correctly. How usable is your machine, for daily work, with this macOS? I have a MBP 8,3, with same GPU. I'm thinking to replace my MacBook by a cMP 5,1 with a RX580 for daily drive, once my work is most at home now, if Catalina was the last version for my MPB with a GPU accelerated. Thanks!

Correct. No acceleration at all, there's no transparency, so tabs in Finder and Safari are dark but still readable. If you install BigSur on a SSD drive, the performance is very good. I change the Genie effect in dock to Scale and loading of Apps is really quick. All the Apps I have (MS Office, Download managers, VPN, Spotify,..) work except Maps and Zoom that return a black screen. It is strange that Skype works flawlessly. No brightness control, but Night Shift works with the related patched framework. With RC2 I realised that CPU is getting less hot than before when graphics activity is required (usual temp is 68/72 Celsius, while when graphics is required is over 95).
Wifi, sound and bluetooth work perfectly.
So IMO the daily usage is possible if your activities are not focused on graphics.
Cheers.

 

[telepati]

Uploaded you could test the BaseSystem fix , if you have issues in continuing the stage2 macOS installer from opencore , then boot from "BaseSystem fix Installer" and apply "BigSur stage2 installer fix", that should proceed the 29 minutes remaining installing phase .

I was a little confused.

1. I create a USB installer with RC2
2. I used both BaseSystemFix one by one.

Now I must boot with the Opt button and choose Installer USB and the first thing I must install ASentientBot Hax3 Installer fix. is that right?

I don't want to make a clean install. Choose Big Sur and Install top over my Catalina.

Here is my question you are mentoning stage2 and OpenCore. is that mean I need 2 USB one is installer and OpenCore USB right? If I install your USBOpenCoreAPFSloader to Installer USB can I use it?

 

[jackluke]

I was a little confused.

1. I create a USB installer with RC2
2. I used both BaseSystemFix one by one.

Now I must boot with the Opt button and choose Installer USB and the first thing I must install ASentientBot Hax3 Installer fix. is that right?

I don't want to make a clean install. Choose Big Sur and Install top over my Catalina.

Here is my question you are mentoning stage2 and OpenCore. is that mean I need 2 USB one is installer and OpenCore USB right? If I install your USBOpenCoreAPFSloader to Installer USB can I use it?

Right, use the alt-option key, then choose "BaseSystem fix Installer" and wait some minutes for booting.

Then apply the "ASentientBot Hax3 fix" or from Utilities the Hax3 quick fix, then wait or let open the "Install macOS BigSur", from there you can select an APFS drive where Install or Upgrade to BigSur.

Now, opencore is only required for Arrandale and similar Intel architecture Mac, but for Penryn Core2Duo opencore is not required, I mean it's required only to detect the hidden stage2 "macOS Installer" for non-APFS Mac .

If you are installing on internal SATA disk probably you don't need opencore and also don't need any "BigSur stage2 installer fix".

You can install USBOpenCoreAPFSloader near the USB installer, it should work too, but if your iMac is non-APFS with APFS ROM patch and you are installing BigSur on internal SATA disk then you don't need OpenCore, just in case of prohibitory symbol setting nvram boot-args="-no_compat_check" is sufficient to complete stage2 and stage3 installer.

Once installation completes you encounter a bootloop due to telemetry plugin, so reboot to the "BaseSystem fix Installer" and apply from Utilities "BigSurFixes Legacy USB patches", at reboot BigSur desktop should work.

 

[Bigpearl]

What do I need to use to update my MacBook Pro 13in 2011 8.1 with updated wifi card for continuity ,to update to Big Sur the easiest

 

[telepati]

Right, use the alt-option key, then choose "BaseSystem fix Installer" and wait some minutes for booting.

Then apply the "ASentientBot Hax3 fix" or from Utilities the Hax3 quick fix, then wait or let open the "Install macOS BigSur", from there you can select an APFS drive where Install or Upgrade to BigSur.

Now, opencore is only required for Arrandale and similar Intel architecture Mac, but for Penryn Core2Duo opencore is not required, I mean it's required only to detect the hidden stage2 "macOS Installer" for non-APFS Mac .

If you are installing on internal SATA disk probably you don't need opencore and also don't need any "BigSur stage2 installer fix".

You can install USBOpenCoreAPFSloader near the USB installer, it should work too, but if your iMac is non-APFS with APFS ROM patch and you are installing BigSur on internal SATA disk then you don't need OpenCore, just in case of prohibitory symbol setting nvram boot-args="-no_compat_check" is sufficient to complete stage2 and stage3 installer.

Once installation completes you encounter a bootloop due to telemetry plugin, so reboot to the "BaseSystem fix Installer" and apply from Utilities "BigSurFixes Legacy USB patches", at reboot BigSur desktop should work.

I don't get it what happened. Just like you said I booted with "BaseSytem Fix Installer" and applied the "ASentientBot Hax3 fix" and start "Install macOS BigSur" choose my Catalina drive and the installation process starts, it said 20 min. I go to the next room to make a couple of things come back and system boot to Catalina. What I did wrong?

Edit: I think I must continue with Opt button after restart first stage and choose MacOS Installer for continue.

 

[justperry]

Installing while I am of into bed, just let it install overnight, I am installing this Big Sur beta from a very slow USB stick, actually a flash card in a USB reader stick, next time I will create a partition on my external Firewire 800 connected disk, must be much faster.

I just arrived from my job, all is well, I probably do it overnight again, no waiting time.

 

[telepati]

@jackluke finished three stages after restart start bootloop it auto open basesystem installer just like you said I tried to install BigSur Legacy USB fix but I stucked here. Which disk should I choose

 

[jackluke]

@jackluke finished three stages after restart start bootloop it auto open basesystem installer just like you said I tried to install BigSur Legacy USB fix but I stucked here. Which disk should I choose
View attachment 1659516

It's usually the largest MegaBytes Preboot used for BigSur, in your case since you updated a previous Catalina, the staged Installer rightly kept the Catalina label, so you should type: disk2s2 and next for System label Catalina

 

[telepati]

It's usually the largest MegaBytes Preboot used for BigSur, in your case since you updated a previous Catalina, the staged Installer rightly kept the Catalina label, so you should type: disk2s2 and next for System label Catalina

I wrote it and then ask me to write disk label Catalina Catalina Data I wrote Catalina then reboot system first reboot I heard the chime but system didn’t boot. Directly go to the basesystem installer again. What am I doing wrong again?

Note: I am making clean install right now and I am on the stage2. Cause these multiple disk confused me.

 

[jackluke]

I wrote it and then ask me to write disk label Catalina Catalina Data I wrote Catalina then reboot system first reboot I heard the chime but system didn’t boot. Directly go to the basesystem installer again. What am I doing wrong again?

Are you using opencore or apple startup manager ?

Do you have an APFS rom patched or you used previously the apfs shell script ?

Try from BaseSystem Installer from startup disk to select your Catalina label then let reboot.

If still doesn't boot, from Utilities apply the "BigSur stage3 installer fix".

If you need opencore you could even install my customised setup from BaseSystem installer.

Through opencore you can detect how many APFS bootable volumes are available at apple startup manager.

 

[telepati]

Are you using opencore or apple startup manager ?

Do you have an APFS rom patched or you used previously the apfs shell script ?

Try from BaseSystem Installer from startup disk to select your Catalina label then let reboot.

If still doesn't boot, from Utilities apply the "BigSur stage3 installer fix".

If you need opencore you could even install my customised setup from BaseSystem installer.

Through opencore you can detect how many APFS bootable volumes are available at apple startup manager.

No
No
I am using opencore usb for choosing every stage cause I don’t see MacOS installer

I will try your suggestion after finish the clean install just 5 min left.

 

[jackluke]

I am using opencore usb for choosing every stage cause I don’t see MacOS installer

I will try your suggestion after finish the clean install just 5 min left.

Are you using your OC setup ? Does your OC setup shows the boot picker ? (Because this is required to check bootable APFS BigSur volumes)

If not then you should install my OpenCore setup included on BaseSystem fix.

For OpenCore booting, after you applied the "BigSurFixes Legacy USB patches" you should reboot and apply also "BigSurFixes opencore preboot".

 

[telepati]

Are you using your OC setup ? Does your OC setup shows the boot picker ? (Because this is required to check bootable APFS BigSur volumes)

If not then you should install my OpenCore setup included on BaseSystem fix.

For OpenCore booting, after you applied the "BigSurFixes legacy patches" you should reboot and apply also "BigSurFixes opencore preboot".

No I am using your OC USB just for choosing stages. Now finished all stages system restart. Apple Logo and Loading bar continue... No boot system open in recovery not basesystem recovery.

I installed Legacy USB fix restart no boot again.

 

[jackluke]

No I am using your OC USB just for choosing stages. Now finished all stages system restart. Apple Logo and Loading bar continue... No boot system open in recovery not basesystem recovery.

I installed Legacy USB fix restart no boot again.

View attachment 1659630View attachment 1659631

Those fixes applied seems correct for making boot and system kernelcollection allow up to 5 minutes.

Try reboot again to "BaseSystem Installer" and apply "BigSurFixes opencore preboot".

Reboot, hold alt-option key, select Opencore, then how many volumes does show opencore menu ?

There should be at least "Big Sur" (or Preboot) and Recovery 11.0.1 (and BaseSystem installer)

From opencore CMD+V and select "Big Sur".

edit:
You should use Startup Disk from BigSur BaseSystem installer, not from a previous macOS Recovery, I notice that because it's in light mode, while any BigSur Recovery environment is in dark mode.

 

[thewebgal]

General Question - I have an early 2009 macPro, flashed to 5.1, updated Wifi card a few years back, Metal GFX card and quick SSD install this spring. Currently running Mojave.
I know the full release is tomorrow (11/12), and I have danced and skipped through 236 pages so it looks like folks with modded MacPros like mine can run the beta, but - Can I bypass Catalina and skip straight ahead to Big Sur?

 

[Ausdauersportler]

General Question - I have an early 2009 macPro, flashed to 5.1, updated Wifi card a few years back, Metal GFX card and quick SSD install this spring. Currently running Mojave.
I know the full release is tomorrow (11/12), and I have danced and skipped through 236 pages so it looks like folks with modded MacPros like mine can run the beta, but - Can I bypass Catalina and skip straight ahead to Big Sur?

Search the micro patcher on GitHub and read the docs there. You have two options to install Big Sur. Or just read the last question on the FAQ on page one and post one of this thread.

 

[maxsp97]

General Question - I have an early 2009 macPro, flashed to 5.1, updated Wifi card a few years back, Metal GFX card and quick SSD install this spring. Currently running Mojave.
I know the full release is tomorrow (11/12), and I have danced and skipped through 236 pages so it looks like folks with modded MacPros like mine can run the beta, but - Can I bypass Catalina and skip straight ahead to Big Sur?

My cMP mid 2012 with Genuine Apple Sapphire AMD Radeon HD 7950 3GB GPU and 802.11ac BT 4.2 card. I don‘t have any issue to install the Big Sur with jackLuke and Barry’s micropatcher.
I don’t have 2009 but my suggestion update to Catalina first.
Check my older posts for more info as needed.

 

[telepati]

@jackluke finally I booted it. After Install OC and OC fix. Wifi works I didn't test other things cause no acceleration and everything extremely slow.

Now we can see, we can install BigSur to non AFPS Mac without an APFS rom patch.

Here is my spec for who want to try install;

 

[brkr1]

Just upgraded via @Barry K. Nathan 's micropatcher 0.5.0.
iMac 27 mid 2011 (12,2) with a K610M
All went smooth.
Used --2011 --iMac got wifi but not brightness control. What should I do?

Got it working with OpenCore.
A made a partition and restored the OpenCore to it so I don't have to leave my pendrive connected all the time. The problem is that the partition I made doesn't show up on Startup Disk, so I have always to start up my machine holding alt/option..
I tried to (after choosing the opencore partition) to Ctrl+Enter my ssd but it didn't work.

How can I make that partition show up on Startup Disk section?

 

[justperry]

Runs like a charm.

 

[Pascal Baillargeau]

MacOS Big Sur 11.01 installed on iMac 2011 WX7100 via opencore 0.6.4 beta without problems.
Thanks @khronokernel @Barry K. Nathan @jackluke @Ausdauersportler @highvoltage12v and others.

 

[justperry]

Runs like a charm.

I mean really...Apple, why did you exclude the 2012 Mac Mini from supported Macs, heck, even worse, even the 2012 cMBP which was sold until November 2016 is excluded, a 4 year run only, it runs well on both, I do not see speed penalties on Big Sur...What the heck Apple.

 

[MacHacJac]

I mean really...Apple, why did you exclude the 2012 Mac Mini from supported Macs, heck, even worse, even the 2012 cMBP which was sold until November 2016 is excluded, a 4 year run only, it runs well on both, I do not see speed penalties on Big Sur...What the heck Apple.

Or worse, the late 2013 iMac.

 

[iNitialE]

anyone can give mw link for create installer and install big sur to macBook pro 2012?
thanks before