Question: what is the difference between a cd-r and a cd-rw?
Answer: Compact disc-recordable (CD-R) and compact disc-rewritable (CD-RW) are discs used for storage with personal computers. ... The main difference between a CD-R and a CD-RW is that the CD-R can only be recorded to once, while a CD-RW can be recorded to multiple times, like a hard drive.