Default Can't move apps to internal storage

Hi, I can only have apps in phone memory and that isn't enough, when I wanted to format sdcard0 I see "lost connection to vold".
How Can I fix my sdcard0 (internal storage)? How to format it by PC correctly?
When I move apps to sdcard0 the phone is freezing and after restart I'm losing these apps.
Help, please.

Reinstalling ROM didn't help (also kernel) I'm using unofficial CM 11 for Xperia Go.