Notes

Rebuild kernel cache macOS 10.15 Catalina

Open a terminal.app and enter:

sudo mount -uw /

sudo touch /System/Library/Extensions && sudo kextcache -u /

sudo reboot

or:

sudo mount -uw /

sudo update_dyld_shared_cache -force && sudo touch /S*/L*/E* && sudo kextcache -u / && sudo reboot

Save bootlog

Open a terminal.app and enter:

log show --predicate "processID == 0" --debug --last boot > ~/Desktop/bootlogfile.log

Verification kext macOS

Open a terminal.app and enter:

for Kext in /S*/L*/E*/*.kext; do codesign --verify --no-strict "$Kext"; done

for Kext in /L*/E*/*.kext; do codesign --verify --no-strict "$Kext"; done

kextstat | grep -v com.apple.