external hard drive with encryption doesn't work as a startup disk
Does anyone else have this problem? I have a new 2018 MacBook Pro with the T2 chip. I have created a bootable backup on an external drive with a recovery HD. I used Carbon Copy Cloner to do this. I also changed my security settings to allow booting up from an external drive.
If I don't turn on encryption, I am able to boot up from this external backup drive. But if I boot up from it, go into system preferences and turn file vault on for the external drive, it will no longer be able to boot up. I get a message saying that the software needs to be updated, I hit update and it goes through the update process and then I get the message again. It goes into this loop.
MacBook Pro TouchBar and Touch ID, macOS High Sierra (10.13.6)