> Then we got CDs, which were fine, but read-only You could format a CD-RW to use it pretty much like a (slow) USB flash drive. I don't remember the details bu

> Then we got CDs, which were fine, but read-only You could format a CD-RW to use it pretty much like a (slow) USB flash drive. I don't remember the details but it definitely was an option in Windows. But then, before CD burners became popular and blanks cheap, most files I had to carry between computers (e.g. to school or to/from a friend) fit on a floppy. In the rare case they did not, I used WinRAR to make one of those split archives.