The TOC changer for PSX, PS2 works like this:
- Assume that your file locates on LBA 50~51
- This means your file is large as 2 LBA, 2048 x 2 = 4096 bytes virtually
- But actually your file is 3000 bytes only
- TOC changer allows you to expand the file to 4096 bytes
- That's all
I don't know is UMD Gen also allow this, but from what I've tried, I can see it has the relinker option only.