Mac Os Big Sur For Unsupported Mac

Posted By admin  On 15.09.21

Although some newer officially unsupported Macs reportedly run Big Sur fine, many older Macs are not supported for a reason, and so the expectation shouldn’t be for a great or perfect experience if you go this route. Posted by: Paul Horowitz in Mac OS, Tips & Tricks » Comments RSS Feed Shop on Amazon.com and help support OSXDaily! Before actually installing macOS Big Sur, we need to disable the system compatibility check layer, disable the system integrity protection (SIP), disable the verification of the libraries and, only then, insert our Hax.dylib in an environment variable. To achieve all that, we first need to BOOT into recovery mode.

Sur

Unsupported Products: Universal Control 3.1 and older versions are not supported and will not open sample rate settings correctly on macOS X 11 Big Sur. Original Series FaderPort has been removed from Universal Control. The USB I/O was too old to support firmware updates over newer USB 3.x chipsets on Mac or PC. First thing first, the version number. Yes, we are now looking at macOS 11, after roughly 20 years of macOS 10/Mac OS X incremental updates. Well, with the release of this new version which will be available on Apple Silicon-based Macs and which introduces a totally new design, Apple taught it was time.

Mac Os Big Sur For Unsupported Mac
I'm having an old MacBook Air 4.2, (mid 2011, SSD, 4 Gb memory), which have been running Catalina for quite some time despite that the max OS is High Sierra. I have been using the great work by dosedudes1 and his Catalina patcher.
Mac Os Big Sur For Unsupported Mac

Big Sur On Imac 2011


Unfortunately he didn't continue with patches for newer OS:s, but have helped with a new patcher. This patcher even handles Macs with graphic cards from 2008 - 2011.
Using the patcher i got the mentioned Mac up and running with Big Sur after just over an hour.
Fantastic !!!

Mac Os Big Sur Release Date

Patcher manual
The manual for the OpenCore Legacy Patcher is nice and there are also a video that will help you for the whole process.
Create bootable USB

You start with creating a bootable USB with info from this post. Just pick Big Sur instead of the mentioned High Sierra.


Building/installing the patcher

Mac

Mac Os Big Sur Download

After that follow these instructions,on how to install and use the OpenCore Legacy patcher.

Good luck !

Remarks

Macos Big Sur Patcher For Unsupported Macs

  • Erase/format the MAC HD/SSD before installation !! I really think that this does it more simple for the installer !!
    • 'Mac OS Extended(journaled)' with an old non SSD HD
    • With en SSD use 'APFS'
  • The Mac rebooted several times during install.
  • Don't remove the USB until at the very end.
  • If you, like me, have a Mac which need the legacy video acceleration support please note that the Mac have a painfully slow display update before you have applied the 'Post-Install volume Patch'.
  • Updating the Mac from Big Sur 11.4 to 11.5, made the messages.app stop working fixed in release 0.2.4
  • Please note that 'Nightly Builds' are available but are for testing purposes only !!!