Q: Everything deleted!

When you did the update did you go through Disk Utility and format the disk?

OK, need more info. What version of the OS and what kind of update? Did you go from Lion to Mavericks, Mavericks 10.9 to 10.9.1, what?

Jhaycob wrote:

 

Not quite sure, the computer is like 4 years old, so its not those big ones, its like a system update or something

i would guess that it is 10.3.1 or something?

There is no way to help you until you advise us of the following:

Need to know which OS is on the MBP.  Each OS has its own troubleshooting solutions.  If anyone here provides the wrong info, your system could be damaged which will cost $$$ to repair since you are out of warranty.

If all your files are missing

I hope you're backing up all your data. If you aren't, you will eventually lose it for real, and no one will be able to help.

Thank you. This post just saved me too. I hadn't noticed that somehow I'd managed to accidentally change to guest user. Thought all had deleted (although I backup left, right & centre) so nice to not embarrass myself at Genius Bar now!