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Update Directly to macOS Big Sur

Updated from Catalina 10.15.7 with OC 0.6.3 without any issues. The only thing that needed to replace is the Airporttltwm wifi kext for Catalina. Replaced it with Airporttltwm.kext for Big Sur. All applications, wifi/bluetooth, MS Office, Zoom, MS Teams, VPN, stock trading streaming tools, etc. are working properly after the update. A simple update like before.
Rig: Asus Z490i-Gaming, i7-10700, Samsung Evo 970 NVMe M.2 500G, 16X2 32GB Corsair Vengeance RGB Pro RAM.
 

nevermind me..... i was misreading it or something. idk.

Thanks for the guides!
 
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Can anyone please explain this to me? In step 4, he says to install to your system drive (Which is called Macintosh HD). Then here in step 5, he says that once clover is loaded to chose to Boot install from Macintosh HD, but says choosing the system drive sends you back without updating. Is "Macintosh HD" not the same drive as system drive?

Please help this poor confused man... me.

Hi there.

No, he is correct. What happens is, once the main drive - Macintosh HD - is prepared, system files are copied across to it. On reboot an extra new Clover Boot entry appears with "Boot install from Macintosh HD" as well as the others. Basically you now have three Clover icons until the install is complete and then this reduces to two - Macintosh HD and Recovery. The trick is to select the Boot Install... option throughout all the reboots until it is no longer there.

(P.S in the above I've ignored the "Preboot" options which can be hidden using a setting in config.plist.)

:)
 
Hi there.

No, he is correct. What happens is, once the main drive - Macintosh HD - is prepared, system files are copied across to it. On reboot an extra new Clover Boot entry appears with "Boot install from Macintosh HD" as well as the others. Basically you now have three Clover icons until the install is complete and then this reduces to two - Macintosh HD and Recovery. The trick is to select the Boot Install... option throughout all the reboots until it is no longer there.

(P.S in the above I've ignored the "Preboot" options which can be hidden using a setting in config.plist.)

:)

Thank you. I read through it a few more times and then realized I was confusing the two icons or something. thanks again!
 
I have successfully updated my Mojave NVME drive to Big Sur. I have Catalina on another NVME drive, which I still use as my main OS.

I use OpenCore (currently 0.6.3), had both OS's booting from the same OC folder.

Downloaded Big Sur on the Catalina drive as an update via the System Preferences > Software Update pane. I did this on the Catalina drive, as that is my main drive but could have just as easily downloaded it to my Mojave drive.

I made sure I selected the Mojave drive for Big Sur installation location.

System ran through the boot process with no issues and updated my Mojave 10.14.6 to Big Sur 11.0.1. As I had the OC folder set to run Mojave and Catalina, with the latest kexts etc. there were absolutely no boot or installation issues during the update process, well not from the installer.

Only thing I forgot to do was to remove the obsolete (32-bit) Adobe CS6 Master Collection applications before the update. Took me longer to remove the Adobe applications and the associated preferences, files and folders than it did to install Big Sur.
 
Upgraded my MacPro 7,1 build to Big Sur today - seamless, and unattended upgrade :headbang:

Updated to OpenCore 0.64, introduced the use of "CpuTscSync.kext", replacing "TSCAdjustReset.kext", as well as following "Fixing MacPro7,1 Memory Errors", and removing "MacProMemoryNotificationDisabler.kext" which is not supported under Big Sur.
 
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Had Catalina running on a NVMe in a Asus B85M-g, i5-4440, 16GB RAM. I didn't want to ruin a functioning system yet,
so just through in a SSD and loaded fresh calcine with MultiBeast applied. I spent hours messing around with numerous combos trying to update clover. OMG! I threw in the towel and went with OC, success! Easy peasy! Read the guide, and you'll be up in no time.
Now just loading up Big Sur on the NVMe drive.
 
Upgraded from Cataline to Big Sur using Clover bootloader. Audio, BT and wifi working perfectly. Had to update the Clover config.plist to MacBbook Pro 2017. That was it .... having a working Big Sur iMac... Thanks TonyMacx86!!!
 
Upgraded from Catalina to Big Sur too using Latest Clover R5129. Biggest hurdle for me was upgrading Clover from R5107 to latest supporting BigSur. I did try to migrate from Clover to OC but couldn't find a good dual boot options so went back to Clover. Followed guide at top and worked seemless. Everything working here.

*Edit - spoke to soon. App store not working for installs/updates. Reinstalled via preboot as discussed here and now working appstore.
 
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Late to the Big Sur party, but just completed successful upgrade from Catalina (Clover) to Big Sur (OC 0.6.6)

My process was as follows:

* Create OC EFI folder (Kexts, ACPI, config.plist, etc) using Kaby Lake Guide
* Delete Clover EFI on my Catalina installer USB, replace with new OC EFI folder
* Boot from Catalina installer USB, and select my Catalina OS Hard drive as boot device, verify everything is working as expected (Audio, Messages, Airplay, Bluetooth, wireless, etc)
*Boot normal into Catalina (Clover), and do full CCC backup
*Delete Clover EFI from internal EFI partition, replace with working OC EFI folder from Catalina USB install disk
*Reboot, cross fingers, verify that computer boots properly with new OC EFI folder
*Verify all the things, update kexts, etc
*Upgraded directly from Software update to Big Sur, took about 30 minutes, be patient
*Success

CPU: i7 7700K
MoBo: Gigabyte GA-Z270MX-Gaming 5
GPU: Radeon RX Vega 56
RAM: 32 GB
HDD: 2 x Samsung EVO 850 1TB (1 macOS, 1 Win10)
Wifi/ BT: OS X Wifi adapter

Thanks again!!
 

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