Test Drive Unlimited 2 DVD9 to 2xDVD5

[KillerOh]

ACTUALLY it happens with me as well (Mine is Multi2 ENG/RU version). And due to the Disk spanning used in the TDU2 installer (Regardless of being Multi5, Multi2 ENG/RU and/or Multi2 ENG/PL), it will ALWAYS ask for the disk 1 when setup asks for the "next" disk. InnoSetup documentation explains this.

When a inno setup installer (TDU2 is one too =3) has correct disk spanning for multi-disk (like, 2 DVD5 or multi-CDs), we have "setup1.bin", "setup2.bin", etc.
(Actually, "(Name of the installer)-(disk number)([OPTIONAL] a letter).bin"

A (nice) way to fix that is to recompile the game installer and adjust the disk spanning correctly in the inno script. While the innoup (and, by extension, Unniversal Extractor) can extract the script from an inno setup-based installer, it isn't the ENTIRE script. A "dirty" one should be hex-edit the setup and change the "Disc 1" text. As I'm not Peter, I'll try to hex it. Don't wait for me, however. =/