I burned a PlayStation 2 game (Kingdom Hearts 2) on DVD-R and I saw that ISO9660 is UNKNOWN so I renamed the ISO9660 and UDF with the game name (KINGDOM_HEARTS_2). Then I started to burn another PlayStation 2 game (Jak and Daxter The Precursor Legacy) but there the ISO9660 and UDF was already named (JAKDAX). What these two (ISO9660, UDF) does? How should I know what ISO9660 and UDF are named on the original disc(s)? Renaming will affect the image file? Why some PlayStation 2 games has already named ISO9660 and UDF and why some doesn't has?