I just recently did the newest update for my MacBook. After I agreed to all the terms & conditions it started to update then froze. I tried to turn it off and back on and it came back to the same screen. It hasn't moved for at least 24 hours
this is is the screen its Frozen on
MacBook Pro
At startup, your Mac runs the Power-On Self Test. If it passes, the chime is played in software. The ROM loader goes out to the drive specified as the Startup Disk and loads a blob of software from a special place, stores it in memory, and passes control to it.
It proceeds to draw the dark gray Apple (so seeing the Apple says your drive responded in a predictable way) and does a bunch of initialization. Then it needs a whole lot of files to bring in Mac OS X and start it up. It tries to start the File system and Mount the boot drive to read files.
If the drive will not mount, it does the equivalent of a Disk Utility (Repair Disk). The progress Bar will proceed to at least the one-third point.
If your picture is as far as it gets in more than a few minutes, your Boot Disk has stopped responding.
¿what kind of Boot Drive? Rotating magnetic drive, Apple SSD, third-party SSD?
Frozen during update
