Windows ME's `IO.SYS` includes `HIMEM.SYS`, which it loads unconditionally. Since it is possible to decompress and disassemble `IO.SYS`, and hack it to enable full dos mode, can we go a step further and modify it to not to load the built-in himem.sys automatically?

Some info on decompressing and disassembling `IO.SYS` can be found here: https://retrocomputing.stackexchange.com/q/15479/24522