You_Know , these players usually have a limit of 99 folders and 99 files per folder.
When you say it does not display, did you mean it does not display in windows explorer or via the browser in the player?
After you uploaded the 2.5GB of movies, did you play every one of them? As hacked memory would allow you to copy files into it, but when you try to play them, you'll experience errors.
i'll still suggest a memory format, as it is the quickest and easiest way to solve most storage problems. The guide is
Here.