CD wasn't even the last physical media that was adopted widely. Technically I think that may be thumbdrives for now, but there were some tape and disc shaped, but high density for the time (like 20MB to 100MB for the disk shaped one, and 1GB to 2GB tapes.) and named something I don't remember, media options that were created in the late '90s early '00s before thumbdrives became a thing.

You don't save to a CD, you burn it