You can find a sample kext here: Catalina's patched AppleAHCIPort.kext (opens new window) A partial fix is to inject Catalina's version with any conflicting symbols being patched.Due to the outright removal of the class, trying to spoof to another ID (generally done by SATA-unsupported.kext) can fail for many and create instability for others. For some reason, Apple removed the AppleIntelPchSeriesAHCI class from AppleAHCIPort.kext.Potential work-around is to inject a patched IO80211Family, see here for more details: IO80211 Patches (opens new window).See Wireless Buyers guide (opens new window) for potential cards to upgrade to.HD 4000 and HD 2500, however currently these drivers are still present in 11.0.1.Ivy Bridge-E CPUs are still supported thanks to being in MacPro6,1.These CPUs will still boot without much issue, but note that no Macs are supported with consumer Ivy Bridge in Big Sur.Not much hardware has been dropped, though the few that have: iMac14,1 should transition over to iMac14,4.Note: AMD CPU users with Nvidia GPUs may find MacPro7,1 more suitable.iMac14,2 and iMac14,3 should transition over to using iMac15,1.

iMac13,2 should transition over to using iMac15,1.

iMac13,1 should transition over to using iMac14,4.

If your SMBIOS was supported in Catalina and isn't included above, you're good to go! Supported SMBIOSįor full list of supported SMBIOS including OS support, see here: Choosing the right SMBIOSįor those wanting a simple translation for their Machines: Reboot on 'AppleUSBHostPort::createDevice: failed to create device' on macOS 11.3+īefore we can jump head first into installing Big Sur, we need to go over a few things: # A supported SMBIOSīig Sur dropped a few Ivy Bridge and Haswell based SMBIOS from macOS, so see below that yours wasn't dropped:.Laptops kernel panicking on cannot perform kext scan.X99 and X299) failing Stage 2 Installation Kernel Panic on Rooting from the live fs.Cannot update to newer versions of Big Sur.Early Kernel Panic on max_cpus_from_firmware not yet initialized.X79 and X99 Kernel Panic on IOPCIFamily.Stuck at PCI Configuration Begins for Intel's X99 and X299 boards.

Stuck at Forcing CS_RUNTIME for entitlement.

Getting started with ACPI (opens new window).

Macos big sur usb install