This error has only found in shadowless Zap! Theme decks. Often times referred to as "Ghost Pikachu" or "Phantom Stamp Pikachu".
Mario kart 10mb -> cart dump will be 16mb. After trimming will be 124mb(actual size) Pokemon is 124mb -> the cart dump will be 128mb.
#POKEMON SUN ROM TRIMMING ERROR FULL#
To contain the game which doesn't fill up the full cart, blank data will be written on it to reach the required sizes to put them into nds cart. If I'm not mistaken, the ds cart dumps I've seen are The concern is ds carts come in fixed sizes to contain the games of different sizes. So the thing is, all of the roms I've trimmed so far, they booted up just fine, but I never had the chance to complete any of those games to discover the possible defects since I rarely have time to play my ds now. I've been using Ndstokyotrim to trim my ds roms for quite some time now, but I only discovered the tools when I started to play my ds much less often.