How to fix the Arduino Uno Serial Port Problem on Apple Mac Macbook Air

How to make your Arduino Uno clone work on your Apple Mac Macbook Air - serial port problem

Link to buy an Arduino Uno clone on eBay:

If you are unable to select the serial port for your Arduino Uno on your Mac, this video will show you how to resolve the problem.

Command to type into TERMINAL, copy and paste this:
sudo nvram boot-args="kext-dev-mode=1"

[rima_]

nvram: Error setting variable - 'boot-args': (iokit/common) not permitted what i have do now :(

[pierreletourneau]

Strangely it was working on my Macbook Air but not on my iMac. After installing the patch, it is now working. Thank you very much.

[danielazubuike]

"There are TWO types of micro USB cable.
One is for charging ONLY and the other is both charge AND data.
You need the one that does BOTH."

- Fixed the problem for me

[EnergeticWaves]

sudo nvram boot-args="kext-dev-mode=1" no longer does anything.

[baras]

I just want to thank you, this has helped me so much. I have been trying to find a solution for the last two weeks. I was about to give hope, and I found this video, and finally was able to upload something to my Arduino. I didn't think I would be so happy to upload my first code to the Arduino ever

[ebashirli]

I am gettin "nvram: Error setting variable - 'boot-args': (iokit/common) not permitted" error. and cannot solve.

[tomsobey]

worked for mega board - do not include last " in command in terminal or you get errors!

[vladimirfokow]

Before doing the steps from this video, try using a different cable! Some cables are power only, but you need it to transmit data as well.
I had the same problem and I solved it by simply using a different cable.

[roshanahmed]

It is showing: nvram: Error setting variable - 'boot-args': (iokit/common) not permitted

[joseromo]

Thank you so much! Fixed my issue even 3 years later! Great video.

[aidlsantoso]

nvram: Error setting variable - 'boot-args': (iokit/common) not permitted

[HamzaAli-kcfq]

The video was straightforward and you also provided links to the information you researched. Thank you VERY much, sir!

[TheArtofEngineering]

Thank you my 2007 mac can now program my Arduino Nano clone! Subbed!!!! Thanks

[hopeEK]

That you, sadly this did not work for me. I am wondering if my board is the issue...

[KeilaMason]

How do i run the command its asking for my password.

[rodrik]

Last login: Sun Oct 3 23:31:26 on ttys000
Haim-MacBook-Air:~ xxx$ sudo nvram boot-args="kext-dev-mode=1"
Password:
nvram: Error setting variable - 'boot-args': (iokit/common) general error
Haim-MacBook-Air:~ xxx$

Not accepting the command

[jessecrockett]

Thank you! Got it working (while watching this video) by restarting crate agent and restarting Arduino ide on Monterey. 😅

[josecaicedo]

In my case, after install the drivers I still had the same problem. Change the cable that connects the arduino and the pc and it was fixed.

[tonysicily]

Clear, simple easy to follow and with links, AWESOME. THANK YOU

[dalilaboughrara]

Hello. First, tank you so much for this video. I think Thant will help me in my problem. Just, can you tell the site web name to download the driver. Thank you so much again