macOS 11 Big Sur on Unsupported Macs Thread

[jackluke]

That's how I did it. Thank you very much for your support. You guys are great. Is it possible to get Wi-Fi on board?

Of course you can install it, but since BigSur is a snapshot booting (I usually disable snapshot to use "sudo mount -uw /") the procedure requires many steps, so you could try the micropatcher to patch kext, I guess you can run it directly from BigSur desktop too .

Meanwhile if you need internet, from my USBopencore you can use ethernet from network prefpane.

 

[Apple-is-Cool]

Updating my MacPro5,1 from Beta 9 to Beta 10 now. Turned on VMM before running the update.

 

[Vital L]

Updating my MacMini 2012 late - 11,36 Gb

 

[jackluke]

Here is the "full OTA package" for beta 10 : http://updates-http.cdn-apple.com/2.../65542047be094051c52b0ec068c8a5f26039d59d.zip

This zip unpackaged can be used through the @ASentientBot method of replacing the AssetData folder on macOS Install Data/UpdateBundle/ , to make that folder correctly just let any version of USB BigSur Installer to complete the stage1 installer, then reboot to another macOS and replace and overwrite that unzipped folder, the reboot to "macOS Installer" and the stage2 should continue with the new beta 10 packages.

 

[justperry]

Waiting for full installer of Beta 10!

Hmm, should be available by now, maybe just a bit more, if not bad luck again.(b1 to b6 yup, no b7/b8, b9 yes, b10?)

 

[Apple-is-Cool]

Updating my MacPro5,1 from Beta 9 to Beta 10 now. Turned on VMM before running the update.

Success! VMM can also be turned off after updating.

 

[Caeed]

Here is the "full OTA package" for beta 10 : http://updates-http.cdn-apple.com/2.../65542047be094051c52b0ec068c8a5f26039d59d.zip

This zip unpackaged can be used through the @ASentientBot method of replacing the AssetData folder on macOS Install Data/UpdateBundle/ , to make that folder correctly just let any version of USB BigSur Installer to complete the stage1 installer, then reboot to another macOS and replace and overwrite that unzipped folder, the reboot to "macOS Installer" and the stage2 should continue with the new beta 10 packages.

Is there an installation file inside the zipper?

 

[justperry]

Is there an installation file inside the zipper?

That's what he just explained, as in, "This zip unpackaged" and "method of replacing the AssetData folder on macOS Install Data/UpdateBundle/"

 

[Vital L]

Is there an installation file inside the zipper?

It is not installation app. It is package with update to replace during installation from USb

 

[Caeed]

It is not installation app. It is package with update to replace during installation from USb

Do I just copy the files to make the USB boot?
(My internet speed is slow and not downloaded yet)

 

[Vital L]

Do I just copy the files to make the USB boot?
(My internet speed is slow and not downloaded yet)

No

 

[justperry]

Do I just copy the files to make the USB boot?
(My internet speed is slow and not downloaded yet)

1. Download the zip.
2. Unzip.
3. Reboot into Installer.
4. Complete the stage1 installer.
5. Reboot to another macOS and replace and Overwrite Install Data/UpdateBundle/AssetData on the USB Installer.
6. Reboot to "macOS Installer" and the stage2 should continue with the new beta 10 packages.

Hope this is correct, if not please correct me.

Thanks to jackluke

 

[Jordillav22]

Updating my MacMini 2012 late - 11,36 Gb View attachment 966535

can it be done by software update? I'm with beta 9. I have a 2012 iMac and can't find an update. Do you have to do something to update like on your Mac? sorry for my English

 

[Vital L]

can it be done by software update? I'm with beta 9. I have a 2012 iMac and can't find an update. Do you have to do something to update like on your Mac? sorry for my English

macOS 11 Big Sur on Unsupported Macs Thread

I uploaded my opencore EFI folder (also updated to 0.6.1) to spoof a supported BigSur Mac in order to detect OTA updates: USBOpencore4s1 to make it working simply copy the EFI folder to any FAT32 formatted volume, at reboot hold alt-option key to select it from the apple startup manager. But...

forums.macrumors.com

Boot from this USB, go to System Pref, download update, wait too long for prepare update and on every reboot hold ALT to boot from this USB and choose Preboot volume, then after second reboot this USB then your BS volume until you finally update your Mac, then boot from EFI from Barrys Micropatcher https://github.com/barrykn/big-sur-micropatcher and then normal boot to Big Sur. Its simple )))

 

[TimothyR734]

I read beta 10 has new desktop pictures if any one can upload them

 

[Franky1971]

Of course you can install it, but since BigSur is a snapshot booting (I usually disable snapshot to use "sudo mount -uw /") the procedure requires many steps, so you could try the micropatcher to patch kext, I guess you can run it directly from BigSur desktop too .

Meanwhile if you need internet, from my USBopencore you can use ethernet from network prefpane.

How can I install the kexts? Is there a terminal command or a program?

 

[justperry]

can it be done by software update? I'm with beta 9. I have a 2012 iMac and can't find an update. Do you have to do something to update like on your Mac? sorry for my English

How can I install the kexts? Is there a terminal command or a program?

Read the readme on Micropatcher

 

[justperry]

Downloaded b10 using Opencore, Installing has to wait until tomorrow, too late to start it now since I need to be next to my computer, bedtime.

 

[CuchoM]

Success! VMM can also be turned off after updating.

View attachment 966541

How did you turned on VMM and Turned off

 

[Caeed]

1. Download the zip.
2. Unzip.
3. Reboot into Installer.
4. Complete the stage1 installer.
5. Reboot to another macOS and replace and Overwrite Install Data/UpdateBundle/AssetData on the USB Installer.
6. Reboot to "macOS Installer" and the stage2 should continue with the new beta 10 packages.

Hope this is correct, if not please correct me.

Thanks to jackluke

Done
But they make a small change in a file
And update for the operating system key
However, the main bugs have not been fixed with 10 new versions
And it still has time to install or run a semi-heavy program or run a virtual keyboard crashing and bad regiments
This operating system has a great beauty
But all people are looking for a new version of Big Sur
So that maybe the bugs will be fixed and they will enjoy the beauty
But nothing special happens
And I don't think the original version will solve the problems either
In any case, thank you

 

[wertico]

Done
But they make a small change in a file
And update for the operating system key
However, the main bugs have not been fixed with 10 new versions
And it still has time to install or run a semi-heavy program or run a virtual keyboard crashing and bad regiments
This operating system has a great beauty
But all people are looking for a new version of Big Sur
So that maybe the bugs will be fixed and they will enjoy the beauty
But nothing special happens
And I don't think the original version will solve the problems either
In any case, thank you View attachment 966762

what do you mean by “stage1”?

 

[Smoker46]

Hi guys!
i wanted to install Catalina on my old Macbook 4.1with the RMC patcher because is the only one that support my old mac. Now the RMC site is down and i can't find the guide to install catalina.
I read the first post and finded out that the 4.1 can (or will?) run bigsur, can i give a try with the new beta patcher?
or is too early?

 

[jackluke]

I read beta 10 has new desktop pictures if any one can upload them

The HEIC size is too much for upload (each picture is a square of 6000 pixel), so I resized and compressed to keep size and quality balanced.

 

[jackluke]

Just few notes about beta 10 , Penryn Core2Duo can still boot the kernel (just remove telemetry plugin), BaseSystem.dmg now is 651 MB (beta9 661 MB), to keep "snapshot disabled" I updated through the ASentientBot method to replace the AssetData of the unzipped OTA package in a /macOS Install Data/UpdateBundle/ folder, I used a beta 6 full USB Installer to make the stage1 on the target beta 9 disk , then from Mojave replaced the AssetData, worked correctly.

With the "full OTA" seems that the staged installer erases the entire System Volume, then copy all the updated files, anyway the Users Data and any settings are kept after stage2 installer , moreover skipping the stage3 installer will let to use sudo mount -uw / , only thing after skipped stage3 you should manually copy on the BigSur Preboot the BootKernelExtensions.kc and its .elides from beta 10 , they are compiled by apple (as any beta 10 system file) on 10 October .

 

[borp99]

1. Download the zip.
2. Unzip.
3. Reboot into Installer.
4. Complete the stage1 installer.
5. Reboot to another macOS and replace and Overwrite Install Data/UpdateBundle/AssetData on the USB Installer.
6. Reboot to "macOS Installer" and the stage2 should continue with the new beta 10 packages.

Hope this is correct, if not please correct me.

Thanks to jackluke

That method didn't work for me. The 'Install Data' folder mentioned wasn't on my USB installer after Stage 1. However, the following worked for me - to update from b9 to b10. [edit: JackLuke's #5102 post didn't show up on my system until after I posted this, so mine is more or less the same experience - but I'll leave this up, all the same]

1. Download b10 full delta update file and unzip.
2. Create a b9 'createinstallmedia' USB installer if you haven't already done so.
3. Apply Barry K. Nathan's 0.4.1 micropatcher.sh and install-setvars.sh to the USB installer.
4. Reboot to USB EFI, then USB Installer and progress through Stage 1 (about 15 minutes on my cMP 2010).
5. At auto-reboot (no chime!), hold Opt and select 10.14 Mojave if available (maybe 10.12 or 10.13 would work too - but, for me, 10.15 Catalina will not show any of the folders in the next step at all. I couldn't get them to show up in any bash 'ls' list via Single User mode or similarly using the b9 Recovery's Terminal.app either).
6. Go to existing BS Data volume/macOS Install Data/UpdateBundle and overwrite the [b9] AssetData folder with the b10 one (select replace and not merge). Also replace the Info.plist file with the one from the unzipped delta folder.
7. Reboot to 'macOS Installer' (not the USB Installer) and allow it to run (about 30 minutes for me).
8. End up with an unsealed b10 (20A5395g), with one snapshot (which I'll [try to] delete from Recovery*).


*Some may be interested that I've created a 1GB HFS+ partition containing a reduced set of the unpatched 'Install macOS Big Sur Beta' USB files on it (including all of the hidden folders and files). My Mac setup doesn't seem to like booting into Recovery using Cmd-R, as I have 5 Mac OS's available to boot from (10.6/9/14/15&11.0), so I've created a quick-boot 'Base' BS volume to help manipulate the latest OS from the terminal. The main work-around, to reduce the total files size from 12GB+ to under 1GB, is to replace the SharedSupport.dmg (inside Install macOS Big Sur beta.app/C/MacOS/InstallAssistant.app/C/SharedSupport) with one created using Disk Utility of about 10MB in size, or however small you can make it. You have to bless the boot.efi file (inside the hidden S/L/CoreServices folder) for this 'base' OS to show up in the standard Mac boot menu. Also, make sure that the 'com.apple.Boot.plist' file (inside the hidden L/Pref/SysConfig folder) includes:
<key>Kernel Flags</key>
<string>-no_compat_check amfi_get_out_of_my_way=1 root-dmg=file:///BaseSystem/BaseSystem.dmg</string>
For icing/frosting, replace the '.VolumesIcon.icns' file (note the '.') with a custom boot menu icon if you wish (1024x1024px @ 72dpi with alpha transparency around the image). [Footnote: I just reconstructed my 'base OS' with b10 files and it boots up much faster than the one using b6 files. They could now fit on a bare 800MB partition]