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Fix Permissions and Refresh KExt cache
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| echo "Fixing ownership and permissions..." | |
| chmod -R 755 /System/Library/Extensions/* | |
| chown -R root:wheel /System/Library/Extensions/* | |
| chown root:admin / | |
| echo "Rebuilding kext cache..." | |
| kextcache -system-prelinked-kernel | |
| kextcache -system-caches |
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Why don't you use sudo permission?
sudo chmod -R 755 /System/Library/Extensions/*
sudo chown -R root:wheel /System/Library/Extensions/*