Why isn't my internal memory being detected on my Z10?

i have updated my blackberry z10 from 10.2. os to 10.3.

I suggest you reload your OS again, this time using the file found here:
http://forums.crackberry.com/bb10-le...oaders-995995/

Download the proper file to your PC, unzip it to your PC, close link, cable your phone to your PC and click the exe.