isoinfo gave me this..
root@Debian-local:/home/verwijs# isoinfo -d -i /media/DEBIAN-BACKUP-2/Mondo-ISO/mondorescue-1.iso CD-ROM is in ISO 9660 format System id: LINUX Volume id: 1 Volume set id: Publisher id: www.mondorescue.org Data preparer id: MondoRescue Application id: Mondo_Rescue_GPL_Version Copyright File id: Abstract File id: Bibliographic File id: Volume set size is: 1 Volume set sequence number is: 1 Logical block size is: 2048 Volume size is: 1135339 El Torito VD version 1 found, boot catalog is in sector 143 Joliet with UCS level 3 found Rock Ridge signatures version 1 found Eltorito validation header: Hid 1 Arch 0 (x86) ID 'www.mondorescue.org' Key 55 AA Eltorito defaultboot header: Bootid 88 (bootable) Boot media 0 (No Emulation Boot) Load segment 0 Sys type 0 Nsect 4 Bootoff 90 144 root@Debian-local:/home/verwijs#