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View Full Version : Secure Boot: MacBook Pro (15-inch, 2018)


gadgetdoctor
11-14-2018, 04:07 AM
I'm just setting up a new Mac. I wanted to test external booting and realised the A2 in my new Mac makes this a little more complicated to set up.

Will you be writing a guide to how we are supposed to set this up? I'm somewhat nervous tinkering with this in case I leave my machine unbootable!

dnanian
11-14-2018, 07:44 AM
No real trick here. You have to enable booting from external devices in the security preferences in Recovery (Cmd+R during power on; look in the Apple menu once you're in Recovery.)

But apart from that, it'll all work as you're used to. Your backup is still a valid OS and secure boot will be fine.

Note that I do suggest formatting your backup drive as APFS.

gadgetdoctor
11-15-2018, 08:14 AM
No real trick here. You have to enable booting from external devices in the security preferences in Recovery (Cmd+R during power on; look in the Apple menu once you're in Recovery.)

But apart from that, it'll all work as you're used to. Your backup is still a valid OS and secure boot will be fine.

Note that I do suggest formatting your backup drive as APFS.

That was easier than expected but I think changing to AFPS is actually necessary. I was having trouble getting it to recognise a startup disk without that.

dnanian
11-15-2018, 08:20 AM
Might have been incorrectly partitioned as HFS+? Anyway, APFS is preferred, yes. :)