View Full Version : Sierra 10.12.3 backup won't boot

03-22-2017, 02:39 AM
My SD backup runs fine but I haven't been able to boot from the backup.

I tried reconnecting while booting with Option Booting gets up to about 80% and stalls. This is a from a WD My Passport Ultra that has been working for a year or two.

03-22-2017, 03:02 AM
Is it a problem with 10.12.3?

03-22-2017, 08:14 AM
No, I have no problem booting from 10.12.3 - send me a support email (to support) and we'll work through what's going on.