Another option is to use debug=0x14e, which will display even more logging options. After running this command, when connecting an external monitor, the internal display will be disabled, which can be beneficial in some situations such as those where you are mirroring your desktop but wish to run the external display at a higher resolution than your laptop can run.This is a combination of kernel debugging features that will show you extra information about the kernel's processes, which can be exceptionally useful if a system is experiencing kernel panics. Apple's machines have a number of hidden boot options that you can use, though do keep in mind that most of these are for troubleshooting purposes and will only be useful to programmers.This command will set the system to always boot to Verbose mode, so you do not have to hold Command-V at startup.This command will have the system always boot into Safe Mode.This command will boot the system into Single User mode without needing to hold Command-S at startup.These three options are the most common ones that people would use when troubleshooting their systems however, there are a number of others you can use as well:This reverses the 'Clamshell' mode for Apple's laptop systems, where when you close the display but connect the system to an external monitor and keyboard the system will stay awake. In addition to keyboard commands at startup, you can use the 'nvram' terminal command to set a number of different boot options, which might be useful when troubleshooting your Mac. I was able to make a macOS Sierra external USB boot disk in a few minutes, and the installation worked without a hitch. This command lets you check the response of a domain or IP address, such as and see how quickly it takes for the server to respond.Install Disk Creator is a straightforward way to create a boot disk.

For instance, to set the system to boot into Safe Mode and verbosely show items as they load during startup, you can either run both of the commands listed above to do this, or you can simply combine them into the following command:To disable these features and have the system boot normally without any extra options, you can erase them from the nvram by either resetting it or, more specifically, by running either of the following commands in the Terminal (these will reset the boot arguments instead of resetting all the nvram variables):Questions? Comments? Have a fix? Post them below or e-mail us!Be sure to check us out on Twitter and the CNET Mac forums. In some cases, such as with laptop systems, this might help preserve power, though is likely not useful for much else unless you are testing and programming.With these options you can set them individually by running the above commands one at a time, or you can combine them if needed. Apple's developer tools have an option to enable or disable some of the CPUs on the system, but you can do this manually by running this command and specifying the number of CPU cores to use. Without it, the system sets the memory limit to either the maximum that the hardware can address, or to the amount that is installed.Limits the number of active processors in the system to the set level.

Terminal Commands For Mac Os Sierra