Both Macbook Air & Desktop Mac required resetting PRAM after this update (black screen upon restart). Has this happened to anyone else?
MacBook Air, OS X El Capitan (10.11.3)
Posted on Jan 29, 2016 10:29 AM
Q: Resetting PRAM after this update...
what facilitated the required PRAM update?
if your mac no longer restarts remove all external devices from the computer with the exception of mouse and keyboard and reboot into safe mode
Try safe mode if your Mac doesn't finish starting up - Apple Support
if the computer completes booting reboot normally and reattach the devices you disconnected.