DiRT 3 (DVD9 to 2x DVD5) *Multi 6*

[anhlinhp4]

Thank you all, KillerOh, pakrat2k2, peterf199
Specially thank KillerOh for your kindly and patiently teaching me A to Z!!!
You're all masters here!
The matter is that I've never worked in DOS environment before and thus, command working is quite strange to me (besides, I'm so stupid too )
Now, pls see my command window:



Exactly, as peterf1999 said, my volume is totally wrong!
The weird is that my volume id was wrong, but it still showed in my DVD RW drive was D3_2, like this:



The volume id (or label) must be D3_2, so How to fix it from step of making iso file?
Pls instruct me one more time.
Don't be mad at me, KillerOh! ...
(sorry, I didn't find out how to make label D3_2 from the above topics)