A boot failure is one of the most frustrating issues when setting up a Hackintosh. The error message or last verbose line before the freeze is the key to identifying the root cause.
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: "OpenCore - "The bless of the installer disk failed.""
I'm currently on a Catalina Hackintosh that was created using Clover ages ago.
I'm wanting to update to OpenCore in the Big Sur transition, but I'm already stuck at the first OpenCore hurdle. I followed the standard OpenCore install guide. Formatted a 32gb USB as MacOs Extended Journaled with a GUID partition map. Acquired the Big Sur installer using gibMacOS. Ran InstallAssistant.pkg, the next step is where the issue arrises. Running "sudo /Applications/Install\ macOS\ Big\ Sur.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume", it gets to 100% then 'Making disk bootable... Couldn't extract BaseSystem to path: /Volumes/Install macOS Big Sur/BaseSystem The bless of the installer disk failed.' I tried installing a beta instead of the public release, as well as a new flash drive, all with the same issue.
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I was able to fix this by changing terminal permissions. https://discussions.apple.com/thread/252032062
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