These disks were originally described as CD-E (CD-erasable). In the earliest type it was possible to add data incrementally to the disk, but to re-use space it was necessary to erase (i.e. reformat) the whole disk. Drag-and-drop could be used only with special packet-writing applications. These problems were solved by the Mount Rainier specification. Designed to enable native operating-system support for CD-RW, it eliminated the need for third-party software and enabled CD-RW to function in (almost) the same way as a magnetic disk.
"CD-RW." A Dictionary of Computing. . Encyclopedia.com. (August 14, 2018). http://www.encyclopedia.com/computing/dictionaries-thesauruses-pictures-and-press-releases/cd-rw
"CD-RW." A Dictionary of Computing. . Retrieved August 14, 2018 from Encyclopedia.com: http://www.encyclopedia.com/computing/dictionaries-thesauruses-pictures-and-press-releases/cd-rw