Internal storage loss

[SilverP2rast]

Hi, i just did rollback from marshmallow to lollipop on my Honor 7 and now it's showing phone storage 32gb, but it only uses 3.86gb and it's full and I can 't install apps. I did not have this situation on marshmallow. Can somebody help me?

 

[SilverP2rast]

I swiped out all data/factory reset (volume up+power), I got my storage back. : )