Hi there! I hope you are well I am new to these forums and i hope i can recieve help as much as give help to those who need it. I do apologise if i posted this thread in the wrong forum - forgive me in advanced I would like to know, how is an ISO file actually created? I am talking about low level deep stuff You see, i am trying to create an application (for backup purposes) which at given dates/times backups certain directories. I do not wish to use 3rd party tool to create an ISO for me, I want the application to create an ISO itself from the directories/files it needs to back up. How exactly does the ISO format work? Does anyone know? I greatly appreciate the help and tips Thank-you!