Boot Flag Saving

[brickerz]

I went into safe mode once because I was having problems with a kext, and now whenever I start up I have to remove the boot flag. Can anyone tell me how to get rid of this permanently?

Screenshot attached

[RehabMan]

I went into safe mode once because I was having problems with a kext, and now whenever I start up I have to remove the boot flag. Can anyone tell me how to get rid of this permanently?

 

Screenshot attached

This is a bug in Chameleon. Clearly boot args typed at the bootloader prompt should not be stored in nvram for future boots. But that's what is happening.

 

You can clear it:

# in Terminal
sudo nvram -d boot-args

You can also use a LaunchDaemon to delete boot-args from nvram automatically. To do so, create a plist file and place in /Library/LaunchDaemons.

 

Something like this:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>Label</key>
    <string>org.rehabman.delete-boot-args</string>
    <key>RunAtLoad</key>
    <true/>
    <key>KeepAlive</key>
    <false/>
    <key>ProgramArguments</key>
    <array>
        <string>/usr/sbin/nvram</string>
        <string>-d</string>
        <string>boot-args</string>
    </array>
</dict>

I call mine /Library/LaunchDaemons/org.rehabman.delete-boot-args.plist

 

Note: This daemon does not run in safe mode, so it will not be able to clear -x. If someone knows how to mark a LaunchDaemon so it runs in safe mode, I'd appreciate hearing the answer.