re cd rom multisession in article pgifo efb msuinfo cl msu edu gary ah cal msu edu writes as i said i know a multisession cd rom is necessary if you do more photos but what if it is just a writable cd rom drive and do a second session do you need one for that too if you write a second time to a cd you need to have multi session capability to read the second session whether it is photos or just data or whatever here is a simplified way of looking at it the first session has the directory structure burned at some tracks the second session has a newer directory structure but the first directory still exists because you cannot change only add so if you put that in a normal drive and it will only look to the first directory and think it has found all data multisession kindof means that the drive will look for the last directory written to the disc older systems look only for the directory not taking multiple directories into account lex van sonderen philips interactive media
