- data CD
- audio CD
- mixed-mode CD - data & audio - SINGLE sesssion
- CD extra - audio THEN data - multisessionn
- bootable CD

 *** File-/Directory Length ***
- ISO level 1 (max of 11=8+3 chars)
- ISO level 2 (max of 31 chars)

 *** Format ***
- Mode 1
- Mode 2/XA

 *** Char Set ***
- ISO 9660
- DOS
- ASCII


- Joliet - Secondary Volume Descriptor & diirectories using Unicode