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How do I do that so it is read/write? I did the usual csrutil disable, sudo mount -uw / (which didn't work), and csrutil enable.

Is there a certain method that I have to follow for Big Sur?
Someone else has to chime in, I haven't been able to do it myself, IIRC you volume needs to be unsealed for it to work, others can correct me if I am wrong.
 
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What's the consensus? Is everyone using the update blocker?

If you are wanting to block update, try this from Mr MacIntosh:

How to Block macOS Big Sur 11.0.1​

You need to be aware of the changes Apple has made to the softwareupdate --ignore binary. I will explain the changes and how to block Big Sur in my article below.

You can also use @hjuutilainen’s bigsurblocker

github.com/hjuutilainen/bigsurblocker
 
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when Im running the install-setvars.sh Im getting this error

/Volumes/Install macOS Big Sur found on device /dev/disk1s2
/dev/disk3s2
Usage: diskutil mount [readOnly] [-mountPoint Path] DiskIdentifier|DeviceNode
Mount the volume in the "standard" place (/Volumes), unless an optional
"custom" mount point is specified.
Partition 1 of the USB stick does not appear to be an EFI partition, or
mounting of the partition somehow failed.
Please use Disk Utility to erase the USB stick as "Mac OS Extended
(Journaled)" format on "GUID Partition Map" scheme and start over with
"createinstallmedia". Or for other methods, please refer to the micropatcher
README for more information.
install-setvars cannot continue.

anyone know what I'm doing wrong. Mediainstall worked fine and micropatcher.sh went fine stuck at setvars. I shouldn't have to do anything mediainstall formats everything. SIP is also disabled.
 
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when Im running the install-setvars.sh Im getting this error

/Volumes/Install macOS Big Sur found on device /dev/disk1s2
/dev/disk3s2
Usage: diskutil mount [readOnly] [-mountPoint Path] DiskIdentifier|DeviceNode
Mount the volume in the "standard" place (/Volumes), unless an optional
"custom" mount point is specified.
Partition 1 of the USB stick does not appear to be an EFI partition, or
mounting of the partition somehow failed.
Please use Disk Utility to erase the USB stick as "Mac OS Extended
(Journaled)" format on "GUID Partition Map" scheme and start over with
"createinstallmedia". Or for other methods, please refer to the micropatcher
README for more information.
install-setvars cannot continue.

anyone know what I'm doing wrong. Mediainstall worked fine and micropatcher.sh went fine stuck at setvars. I shouldn't have to do anything mediainstall formats everything. SIP is also disabled.
Did you run it as root, you need to input sudo before install-setvars.sh.
 
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Okey. Everything's going great. Great thanks to Barry, Ausdauersportler, and the whole crew. Good job.
 

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when Im running the install-setvars.sh Im getting this error

/Volumes/Install macOS Big Sur found on device /dev/disk1s2
/dev/disk3s2
Usage: diskutil mount [readOnly] [-mountPoint Path] DiskIdentifier|DeviceNode
Mount the volume in the "standard" place (/Volumes), unless an optional
"custom" mount point is specified.
Partition 1 of the USB stick does not appear to be an EFI partition, or
mounting of the partition somehow failed.
Please use Disk Utility to erase the USB stick as "Mac OS Extended
(Journaled)" format on "GUID Partition Map" scheme and start over with
"createinstallmedia". Or for other methods, please refer to the micropatcher
README for more information.
install-setvars cannot continue.

anyone know what I'm doing wrong. Mediainstall worked fine and micropatcher.sh went fine stuck at setvars. I shouldn't have to do anything mediainstall formats everything. SIP is also disabled.
possibly:

Please use Disk Utility to erase the USB stick as "Mac OS Extended
(Journaled)" format on "GUID Partition Map" scheme and start over with
"createinstallmedia".
 

Tutorial:

This tool is very easy to use, it does everything practically by itself and it is not necessary to use the Terminal. You open the application, follow the steps, create the patched USB installer, boot from it, install Big Sur and that's it. Once the installation is finished, in the applications folder you will find the app "Patched Sur", and it gives you the option to apply the "Patch Kexts" to solve, for example, the Wifi, USB, ... once installed, restart and that's all functional.

Thank you very much. Installed Big Sur on MacBook Pro 9,2 aka mid2012 without hassle. Now I am writing from Big Sur. It works well. I have two question.

1. Installed over Catalina. Can I clean install using USB stick?

2. When 11.0.2 comes out, can we install it via software update?
 
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I don't want to update my Catalina system before to test a fresh install on an external SSD. Caution should be taken before making an update without really knowing all the problems that one may encounter afterwards. Thank you for your post while waiting for the author of the video to indicate how to install Big Sur without going through an update

Clean Installation Big Sur

 
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Thank you very much. Installed Big Sur on MacBook Pro 9,2 aka mid2012 without hassle. Now I am writing from Big Sur. It works well. I have two question.

1. Installed over Catalina. Can I clean install using USB stick?

2. When 11.0.2 comes out, can we install it via software update?
1. Yes! Commentary 6190
2. I don’t Know...
 
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It works all well on Imac late 2013 and installation time was very similar to my MBP 2019, maybe because Imac runs from SSD through usb and it has 32Gb of memory. But my issue is there any way to fix graphics ? I see menus and toolbar it's not transparent and menu has white lines around this is something I don't have on my MBP. I know there was same issue with older unsupported macs who upgraded to Catalina but there was fix . I attach few screenshots Graphics looks definitely broken . Even someone who post before me screenshot it looks like graphs are broken .

Screenshot at Nov 13 22-30-10.pngScreenshot at Nov 13 22-31-23.png
 
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Thank you very much. Installed Big Sur on MacBook Pro 9,2 aka mid2012 without hassle. Now I am writing from Big Sur. It works well. I have two question.

1. Installed over Catalina. Can I clean install using USB stick?

2. When 11.0.2 comes out, can we install it via software update?
1. yes.
2. Most likely not....as in, it won't even download using Software Update.

We later might be able to use delta updaters, for now it's a complete install or install in place.
 
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Thanks to everyone that was able to get all of this together. Very much appreciated!

My system config is in my sig. I was able to get Continuity to work with AWatch System Unlock, Handoff, AWatch Admin Prompt Unlock, and Instant Hotspot. I was not able to get the shared copy/paste (clipboard) to work though. Not a big deal. It was a little tricky on getting the Continuity enabled manually after install - it mounted the read/write OS under /System/Volumes/Update/mnt1 so I had to go there and then find the file to update but wasn't complicated. I could see where that would throw people off.


Screen Shot 2020-11-13 at 12.40.09 PM.png
 
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It's not that hard for a 2012 machine, I explained what steps are needed in a post a few pages back, search my history for it, I will link to it shortly in this post, will edit this post.

Link
https://forums.macrumors.com/thread....2242172/page-241?post=29221192#post-29221192

1. Have a USB stick handy, or an external disk, or a dedicated partition.
2. Download the full installer.
3. Download Micropatcher from here.
4. Open Terminal.
5. sudo /Applications/Install\ macOS\ Big\ Sur.app/Contents/Resources/createinstallmedia --volume /Volumes/Install\ macOS\ Big\ Sur\ Beta --volume /Volumes/***
*** is the disk label you install the Installer onto, so the USB stick, I dragged and dropped my USB stick onto the terminal, the path will be automatically added.
6. Input your password.
7. It will erase your disk so be aware not to chose the wrong one.
8. Input "Y" if asked to erase.
9. Wait until it's finished, could take a while dependable of what kind of media you use.
10. Unzip the downloaded micropatcher, drag the micropatcher.sh file onto the Terminal window, then enter.
11. In Terminal type sudo and then a space, next drag the install-setvars.sh onto the Terminal window, hit enter.
12. Restart after it is finished.
13. Hold Option key right after restart, keep holding it until you see the bootpicker.
14. Chose the EFI disk, it will instantly shut down.
15. Start up again and again hold the option key for the bootpicker.
16. Chose the USB installer, wait for the installer to open.
17. Chose the disk you want Big Sur installed onto.
18. Wait for probably an hour or so (Have a coffee or a beer in the meantime 🍺 ) if you install from a USB stick, probably half of that if the installer resides on a SSD medium.
19. Restarts multiple times.
20. Almost done.
21. The next step is for WIFI, Wifi does not work OOTB on a 2012 Mini or 2012 MBP....
21a. Restart for the last time after it booted into Big Sur, you may restart before login or after login, makes no difference.
21b. Hold the Option key again to get into the USB installer, there are other ways but this one is the easiest, chose the USB installer, next open terminal from the menu.
21c. Input "/Volume/Image\ Volumes/patch-kexts.sh" and hit enter, when finished enter "reboot", both without the quotes.

Voila...done...a working Big Sur OS.🍺🍺

Edit: Do not forget to thank Barry K. Nathan
Ah, thanks for this easy step by step instructions
 
I have updated an existing OpenCore installation to 0.6.3 and then switched from Catalina to Big Sur on a MacPro 5,1. Most of all worked “out of the box“, except the brightness control of the Cinema Display with the F1/F2 key. Is there an additional kext or setting that needs to be set/installed?
 
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How do I run this command on Big Sur?

I need to enable Continuity on my mid-2011 27" iMac:

sudo /usr/libexec/PlistBuddy -c "Set:Mac-942B59F58194171B:ContinuitySupport true" "/System/Library/Frameworks/IOBluetooth.framework/Versions/A/Resources/SystemParameters.plist"

Tried the traditional Catalina method by booting into the Big Sur Install volume and ran the usual csrutil disable, etc but the change didn't save.

Any ideas?
If you use big-sur-micropatcher, boot into the USB stick. Run terminal and disable SIP. Reboot into the USB stick and run terminal again. The following worked for me.
Bash:
cd /Volumes/Image\ Volume
mount -uw "/Volumes/BigSur" # or whatever your main volume
mount -uw "/Volumes/BigSur" # for some reason I sometimes have to do this twice
/usr/libexec/PlistBuddy -c "Set::Mac-942B59F58194171B:ContinuitySupport true" "/Volumes/BigSur/System/Library/Frameworks/IOBluetooth.framework/Versions/A/Resources/SystemParameters.plist"
# make sure it took on the read-only volume
defaults read "/Volumes/BigSur/System/Library/Frameworks/IOBluetooth.framework/Versions/A/Resources/SystemParameters.plist" Mac-942B59F58194171B
bless --folder "/Volumes/BigSur/System/Library/CoreServices" --bootefi --create-snapshot
./zap-snapshots.sh "/Volumes/BigSur"
Your mileage may vary.
 
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