Couple problems

I installed MyPS2 to my Dev2 on Matrix Infinity chip. Now the readme says
"If you want to install the program to your HDD you must add two entries
to the CONFIG.DAT file:

hdd_boot_part = hdd0:PARTITION
hdd_boot_path = /PROGRAMS/MYPS2/

hdd_boot_part is the name of the partition you have myPS2 installed on.
hdd_boot_path is the path of the directory you have myPS2 installed in."

Now I had to rename the elf file to BOOT.ELF for it to be launched in dev2. the file is just at hdd0:__boot so thats what i set hdd_boot_part to. Its in the root folder of that so I set hdd_boot_path to / Is this correct? When I try to launch it, all goes well until the loading GUI string part, which fails.
Since I renamed the elf to BOOT.ELF, is that causing issues? So I need to edit a bit of info elsewhere?