I have a Lenovo K30-W, and I installed a ROM designed for Lenovo A6000, which is virtually identical except for the smaller internal storage (16GB vs 8GB). I am happy with the ROM, but my partitions were resized, so now I have 8GB of unused space on internal storage. I am currently on Cyanogenmod 12.1 (Lollipop). As I understand, internal sdcard is no longer a separate partition, but merely a folder in data partition. Is there a way to increase data partition, without reinstalling (or alternatively, with reinstalling)?
I've seen similar questions, but the answers are mostly "don't do it, you'll screw things up". However, in this case I am sure I have unused space on the phone storage.