Boot problems can occur for many reasons — from BIOS settings to incorrect OpenCore configuration. Here is a step-by-step guide.
Step 1 — Boot with Verbose Mode
Add -v keepsyms=1 debug=0x100 to your boot arguments.
Step 2 — Check Firmware Settings
Disable Secure Boot, Fast Boot, and CFG Lock. Set SATA to AHCI. Enable UEFI boot mode.
Step 3 — Validate OpenCore Configuration
Run ocvalidate on your config.plist. Use ProperTree to perform a clean snapshot.
Step 4 — Test with a Fresh USB Installer
Recreate the installer on a different USB drive and try a USB 2.0 port.
Expected Results
- Verbose boot passes the previous stopping point
- The installer sees the target disk
- Keyboard and mouse respond during the installer
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Original Question: "Will a fresh install of Catalina delete my data?"
I had a working Catalina and wanted to update both OC and MacOS to Big Sur and it all went south, started getting kernel panics and weird lines during the verbose log, so I decided to boot again from the original USB with Catalina and the EFI that worked fine for months but I'm getting the same perros nos, kernel panics and errors in verbose log so I'm not sure what to do and I'm thinking about installing the latest version of OC and kexts and Catalina all over again but I'm not sure if would lose all of my info, what do you think?
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