If a .mnu file does not appear to be working, it is probably because you have not edited it to contain the name of your ISO file (two places usually).
There are some Ubuntu mnu file examples in the \_ISO\docs\Sample mnu Files folder - e.g. Ubuntu-13.04-desktop-amd64_Persistent.mnu.
Just copy the one for your version to the \_ISO\LINUX\MNU folder and read the instructions inside the .mnu file. e.g.
# Make a ext2 file using RMPrepUSB in the root of the drive (i.e. File Name=Ubuntu1304-rw Volume Name=casper-rw)
# Place this .mnu file and the Ubuntu ISO in (_ISO\xxx\MNU), e.g. \_ISO\MainMenu\MNU or \_ISO\Linux\MNU
# This menu will work even on an NTFS USB boot drive
# IMPORTANT: you MUST run WinContig (Ctrl+F2) before booting E2B.
You must edit the name of the .iso file inside the .mnu file to match your own ISO file name.
Topic: Easy2Boot
Date 17/02/2015
By SteveSi
Subject Re: Persistence and .mnu files
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