I do format dalvik, cache , sytem, data and internal storage and then connect my device to PC use USB. My PC automatically detect the internal storage, after that i copy ROM and Gapps zip file to internal storage and install both of them.
After reboot, I open file manager and notice that ROM and Gapp zip file gone. Is it normal behavior?
I am asking because usually i use sideload to install ROM when I do format internal storage and the sideloded file still remain after reboot