No -- having gone through the the Big Sur Betas -- my personal view is that Apple is gradually through each Big Sur beta trying to make it difficult to get Big Sur running on machines that no longer has the blessings from Apple. It is quite clear to me that this is not a bug that Apple inadvertently introduces.
Got a tip for us?
Let us know
Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
MP 1,1-5,1 Manually Configured OpenCore on the Mac Pro
- Thread starter cdf
- WikiPost WikiPost
- Start date
- Sort by reaction score
- Status
No -- having gone through the the Big Sur Betas -- my personal view is that Apple is gradually through each Big Sur beta trying to make it difficult to get Big Sur running on machines that no longer has the blessings from Apple. It is quite clear to me that this is not a bug that Apple inadvertently introduces.
Having set-up multiple hackintoshes with Big Sur throughout the beta phase I can not confirm your personal view.
I had only one issue with Big Sur in fact the only issue was when I went from beta 7 to beta 8 that's the only issue where it would not install, but it was my fault because I had omitted something that was working with the previous beta but not with the 8th, I mean other than that It was smooth. Like I said yesterday I do not understand why they would introduce such bug, and I am kind of thinking what you are thinking and I said I hope I am wrong.
It is kind of weird to me...
Again I hope I am wrong all the way.
The writing is on the wall buddy. T2 chip, Apple Silicon, etc.
If the MacPro4,1 and MacPro5,1 have the blessing of Apple, they would not be in the unsupported category as they can still run Big Sur very, very decently.
If the MacPro4,1 and MacPro5,1 have the blessing of Apple, they would not be in the unsupported category as they can still run Big Sur very, very decently.
I played 8K videos on earlier Big Sur on my cMP, so the T2 chip is an artificial restriction. So if the smbios spoofs iMacPro1,1 the playback is OK in Safari. The VP9 decoding can be offloaded softwarewise to the GPU and with the 24 cores the CPU load was only 21 percent. I haven't tested latest Big Sur.
Sure, but lets not get too negative too quickly. There are still plenty of macs that wont be Apple Silicon for a year or three that will still need support so there's there's still some life in these magnificent beasts for now...enjoy them while you can and the work these amazing people are doing to keep them as up to date as possible. My cMP is 10 years old this year and still doing everything I need from it - well! Thanks to all concerned, the real heroes who are here for us when Apple isn't...
About BigSur through opencore on unsupported MacPro, I could confirm that a MacPro3,1 with Penryn Core2Duo is capable to boot the beta 9 BigSur kernel (even without a Metal GPU) with a working desktop, but I would know, someone with Nehalem or Westmere architecture can boot any BigSur beta version ?
Apologies if this been answered at some point, but I couldn't seem to find anything definitive:
I currently have been running OpenCore with various options for sometime now with some basic options on a native Mojave install. The question is, if I wanted to upgrade to Catalina, is it just a matter of toggling the VMM flag, or do I need a separate drive to perform the installation? Thanks in advance for the clarification, and let me know if there is any other info you need? (config.plist for OC, etc.)
I currently have been running OpenCore with various options for sometime now with some basic options on a native Mojave install. The question is, if I wanted to upgrade to Catalina, is it just a matter of toggling the VMM flag, or do I need a separate drive to perform the installation? Thanks in advance for the clarification, and let me know if there is any other info you need? (config.plist for OC, etc.)
Use Hackintool. You can do a simple right click on your GPU in the PCI device list and copy the path from it.
You need to disable MCEreporter on a dual Xeon CPU when spoofing iMacPro. Instructions are on the first page.
Config.plist entry seems ok. Did you also place AppleMCEReporterDisabler.kext in EFI/OC/Kexts?
Also, use /User/user/gfxutil -f display
That just gives you the display path and not the path to everything
Last edited:
The AppleMCEReporterDisabler.kext is in the kexts folder along with the other two kext files.
The path also seemed to match what I found.
Question about installing on my 5,1. I have no plans to install Big Sur, the highest i want to go is Catalina for the GPU support. If i were to install opencore, would that change my SMBIOS to show as a different computer? From what i have heard if you mess around with SMBIOS when signed into icloud it can blacklist you from imessage and facetime?
The guide has been updated to OpenCore version 0.6.2.
Updated to 0.6.2 using h9826790's package. Thanks again. Then downloaded the Big Sur installer using gibMac. Installed with UpdateSMBIOS set to true. Booted into Big Sur beta 9. Did not have to use VMM. Then decided to turn off the SMBIOS and see if I can boot into Big Sur. It was successful! I'm hoping this continues. Glad to be able to boot into this after the disaster with Beta 8.
Is this just with hybridization spoofing? We will have to investigate the right strategy for installing and updating Big Sur, because temporary full spoofing could cause Apple ID issues...
Nice. This is good news.
No need to uninstall when updating. If you already have OpenCore working, just carefully replace the files on the EFI volume and reboot.