Don't use CD-RWs to back up, use a CD-R instead. Using CD-RWs for any
sort of backup isn't a good idea in any case because you want complete
transferability from a backup. If you use a CD-RW, the computer on which
you want to read the disk must either have the same program used to
format the CD-RW installed or a UDF reader.
CD-RWs come from the time when CD burners and media were very expensive.
Now with CD-Rs under a penny apiece, there is no reason to use the CD-RWs.
Your best bet is to forget about backing-up to CD. It's going to be a
confusing, expensive, cumbersome, lengthy, frusterating boondogle. Buy a USB
drive, they are quite inexpensive these days
