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jacklukem / BigSurfixes

Big Sur fixes for unsupported Mac aka BigSur BaseSystem fix
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iMac 7.1 can’t boot #9

Closed mac123456788 closed 3 years ago

mac123456788 commented 3 years ago

I have a iMac 7.1 and there Boots Not from the USB key. When booting from the USB key, it only shows that the Mac was restarted due to a problem. What can I do?

Sorry for the bad English im from Germany

jacklukem commented 3 years ago

Minimum requirement to boot Big Sur kernel Is a Penryn Core2Duo cpu, to check if your iMac is capable booting from another macOS (example El Capitan) copy paste this:

sysctl -a | grep machdep.cpu.brand_string ; sysctl -a | grep machdep.cpu.features

if from output you notice SSE4.1 than your iMac could boot Big Sur , otherwise can't work.