> I get all filenames in uppercase, why ?> I use the ISO9660 option.

"ISO9660 level 2 names can be 32 chars long, are limited to 
a subset of the 7-bit ASCII chars (capital letters, 
numbers, space, punctuation), and are only allowed one "." 
character."

Hence, all files are capitalized. The option might not be 
fully ISO9660 complicant, however.