How to Fix Stuck on AmiShimTimerBoostExit
This mini-guide provides a structural approach to troubleshoot and fix the issue.
Prerequisites
- Confirm your hardware specifications (CPU, GPU, Motherboard).
- Ensure you have a bootable recovery USB and backup your EFI.
Fix Steps
- Boot with
-v keepsyms=1 debug=0x100to identify the exact kernel panic. - Validate your config.plist using ocvalidate.
- Ensure your EFI matches the Dortania guide specifications for your CPU generation.
Verification
- Reboot and verify if the functionality is restored and stable under typical usage.
Original Question:
I'm trying to boot High Sierra on a laptop. After selecting OpenCore external, the screen flashes with text and then nothing happens. The last three entries in the debug log are the following:
47:961 01:024 OCSMC: SmcReadValue Key 4D535463 Size 1
48:001 00:039 OCSMC: SmcReadValue Key 4D534163 Size 2
48:037 00:035 AmiShimTimerBoostExit changed current period to 549254
What should I do?
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