I have a collection of old firewire devices and am going to have a go running my problematic macbook as the controller/interface for these devices,
The plan is to run this macbook only using integraded graphics Intel HD3000 (bypassing the AMD Radeon 6770M).
As these devices vary in age it also makes sense to use older MacOS versions.
Running the macbook seems possible by removing kexts from the OS to prevent ever switching
Or the path I will choose today (but will choose later),
Installing Snow Leopard, which does not include support for the 6770M
Firstly I tried the Snow Leopard route.
The late 2011 shipped with 10.7 Mountain Lion, so a couple of steps are necessary.
Simplest is to install 10.6.7 onto a compatible computer, then move the install or HD over. This version was shipped with the Early 2011 macs and is the earliest compatible with the Intel i series chips.
My process was to install 10.6 onto the only hand mac i had, which is a 2009 iMac with a Core2Duo processor. However this does not support the newer Sandy Bridge CPU's and resulted in a kernel panic over cpu incompatibility.
panic(cpu 0 caller 0x558c2459: "Unsupported CPU: family = 0x06, model = 0x2a, stepping = 0x7"@/SourceCache/AppleIntelCPUPowerManagement/AppleIntelCPUPowerManagement-90/pmProcessor.c:210
Booting into 10.6 on the 2009 iMac and updating to 10.6.8 fixed this issue.
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