It was a huge failure on the part of OS vendors that CD-R never became that. The ISO9660 file system on CD-Rs was specifically designed so that you could add o

It was a huge failure on the part of OS vendors that CD-R never became that. The ISO9660 file system on CD-Rs was specifically designed so that you could add on sessions to a disk that "deleted" or "modified" files on earlier sessions, so that an OS could just present a CD-R as a huge floppy and it would work seamlessly until the disk ran out of space to append new data to. Then they failed again with DVD-RAM, which was also basically a gigantic optical floppy disk. (Personally I stopped using floppy disks in around 1998/1999. Before going to school I'd start an upload of the document I needed to my ISPs 10 MB of FTP space on my 56k modem at home before leaving, and by the time I arrived at school, it was done. This was still more reliable than using floppies.)