How to Fix SSDs invisible booting into Big Sur installer
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 have two Samsung 870 EVO SSDs (port 5 and 6 on the motherboard) that are disappearing when I boot into the big sur installer. They don't show up in Disk Utility.
When I reboot into High Sierra they remain invisible. I have to literally unplug my box (though NVM reset works sometimes too) to get them back.
I see the following in the opencore logs, but I'm not certain if it's relevant:
02:629 00:028 OCJS: Got APFS super block for 5CB03DDB-7E25-D14D-864F-B5CEBEAB28DA
02:657 00:028 OCJS...
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When I reboot into High Sierra they remain invisible. I have to literally unplug my box (though NVM reset works sometimes too) to get them back.
I see the following in the opencore logs, but I'm not certain if it's relevant:
02:629 00:028 OCJS: Got APFS super block for 5CB03DDB-7E25-D14D-864F-B5CEBEAB28DA
02:657 00:028 OCJS...
Read more
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