These answers aren't strictly true. It all depends how you originally burnt
the data to the CDRW disc. If you used Windows built in burning you shouild
get a third party burning software, I use Nero 6 but a lot comes down to
personal preference. The easiest way would probably be to do as The Unknown
P said and copy the contents of the disc back to the hard drive then reburn
the data to the CD. You don't need to format CDRW discs. You only need to
reformat (or format) if you want to use packet writing software like Nero's
InCD. Packet writing turns the CDRW disc into something akin to a big floppy
and you can drag and drop files to the disc. If you don't want to format the
disc you can do multisession discs where the data stored on the disc is kept
and the contents table (the table that stores the file names on the disc) is
updated. This way you can rewrite untill the disc is full.
There are plenty of good web sites dedicated to burning CDs so do a search
on google and you will soon get the hang of it. If you haven't formated the
disc just put it in your rewriter and click erase and it will erase the
disc. This is NOT formating it just erases the data so you have a blank
discs again. What you do all depends how you burned the disc the first time
and how quickly you pick up CD burning. Read the help files that come with
whatever burning program you choose.
Midnight
The Unknown P said:
You will need to transfer all the contents of the CD back to your HDD and
edit them there and then format the disk(erase it) and then rewrite
everything you want back to the CD. That's the only way I know of doing it.
Good luck