0

arduino nano, the driver is not showing up in Port assignments. It has worked with this operating system before. I’ve messed something up. "OS X EI Capitan ver. 10.11.3 I have check the posts but the serial port is a no show

Available Ports

asked Feb 2, 2016 at 17:36
1
  • Genuine Arduino nano, or cheap Chinese copy? Commented Feb 2, 2016 at 20:39

1 Answer 1

2

If the port showed in earlier versions of OS X, but never showed after upgrading to El Capitan, then you probably used an unsigned driver, which is no longer allowed by Apple's new System Integrity Protection (a.k.a. "Rootless"; more details in a WWDC session).

Any unsigned drivers will have been disabled during the upgrade process. Even more, SIP does not allow any non-Apple files in /System, /bin, /sbin and /usr (except for /usr/local), so anything you had put in there will have been moved away as well. To see what has been disabled:

  • ls -l "/Incompatible Software"
  • ls -lR /Library/SystemMigration/History/Migration-*/QuarantineRoot/*

To get it working again: find a signed driver, or Switch off SIP.

answered Feb 2, 2016 at 20:40

Your Answer

Draft saved
Draft discarded

Sign up or log in

Sign up using Google
Sign up using Email and Password

Post as a guest

Required, but never shown

Post as a guest

Required, but never shown

By clicking "Post Your Answer", you agree to our terms of service and acknowledge you have read our privacy policy.

Start asking to get answers

Find the answer to your question by asking.

Ask question

Explore related questions

See similar questions with these tags.