You build the UBCD with the "-l" switch?
I suppose you do because there is no "rr_moved" directory on your disc, which come without this switch when "-r" is used.
The question stay: what brings the RockRidge extension to the CD?
Or what do we lose without it?
After a quick seach on google, it seems that RockRidge permit a better management of read rights ("chmod" style, groups supported). Not very useful here.
"The Rock Ridge extensions to ISO-9660 define a way for UNIX-isms like long mixed-case filenames and symbolic links to be supported."
(from http://thproxy.jinr.ru/file-archive/doc ... aq03.html#
Symbolic link are more interesting, but again, there is none here.
Joliet is supported in Linux kernel since the 2.0.36 (I remember it was kernel of my first linux distrib, RedHat 5.1 from 1999 I think).
So I suppose that the RockRidge are usefull for old linux kernel and probably other UNIX systems.
I did not find any article comparing Joliet and RockRidge under linux. What I say before is that Joliet may be better than RR for linux because of the long filename.
The -joliet-long allows filename up to 103 char (read in mkisofs).
I suppose it nearly corresponds to what some burning software call "romeo".
Joliet up to 64 char, Romeo up to 128.
Actually, I don't realy know if it is needed in the UBCD, I read it on the tutorial, and it doesn't seem to bother.