What's the difference between CD-R and CDR-R/W?

Answer 1

CD-R youcan write to only once. CDR R/W you can write to over,and over again.

Answer 2

I can't remember exactly, but it has to do witht the way the laser and disk interact. It is something like the disk has a mid-line in each track and the image is created on one side or the other of the mid-line. If you have a CDR+ drive trying to write to a CDR- disk, the information will not be correct because the laser was writing on the "unformatted" side of the track. Like I said I don't remember exactly, so maybe someone else will be able to expand or clarify on the explaination..

Answer 3

CDR can only have information put on it once, CDR RW means you can "re-write" the CD or change it up, in other words if you made a cd and you're not happy with it you can change it.

Answer 4

Let's start with the CDR-R/W, this reads and writes to the disk. This type of disk is formatted like a floppy or hard drive. You can add and remove files like on a normal hard drive.

CD-R is a One-Way disk, you burn files to it, they are permanent and can't be removed.

Remember one thing, with CDR-R/W not all computers will be able to read your cd. They have to have the software to make it readable.

Answer 5

CD-R - These are inexpensive disks that are used generally to back up data. These disks can also be used to create inexpensive presentations for distribution in classes or as easy safe transport to conferences. These disks usually hold between 650MB and 700MB of information. A 30 page paper double spaced with 12 point font takes up less than 1/10 of a MegaByte or MB. Given this example, you can imagine how many documents you can store on a single CD. The advantage of these disks are the low cost and reliability of the backup. CDs can become scratched and data can be corrupted, but odds are if a CD is kept in a case away from dust or other contaminants, a CD-R of reasonable quality should last approximately 50 years. These disks utilize a technology that allows the burner to sear the data into a reflective surface in the form of many zeros and ones. You can normally play CD-R disks in any CD-ROM drive. You would use these disks when you need to trade information between computers. You should note that simply creating a CD on a computer does not necessarily make it compatible with other operating systems. For example, a PC created Word document that is not compatible with an older Macintosh computer will not be transferrable any more than it would be on a floppy or zip disk.

CD-RW - disks on the other hand are more flexible than CD-R because you can write and rewrite data to the disk. The quality of these disks vary, but generally the disks are rewritable up to approximately 40 times. If you wish to have a disk for once a week backups, CD-RWs should serve you for about a year. Generally, the newer CD-ROM drives can read CD-RW disks, but you should be careful because not all CD drives can read these. If you need to trade information, you are better of creating a CD-R and closing the disk. If you want to continue writing to the disk as backup for your own computer, you can do this on a CD-RW up to the available space. As you read under "What is a Burned CD?" the difference between CDs and other rewritable media such as zip disks is that when you Finalize a session, you have completed writing to that disk. If you are writing to a CD-RW, however, you can still erase the disk. To write more information, you need to add the new files after the data. You cannot change files when writing to a CD, you only can write new versions of the file up to the space on the disk. This inflexibility in changing files after they have been written to the disk means that CDs should primarily be used for backup of permanant files. For example, you may wish to have a final electronic version of a published manuscript, brochure or personally created media file. This final version can then be stored for retrieval at a later time.

Whether you are using CD-R or CD-RW disks, you will use the software the same way. The difference is in whether you write all files and close a session or leave the burn session "open" so you can write more files to the disk later. When you use CD-R, you usually have to burn the disk and close the session before ejecting the disk. With a CD-RW, you should be able to remove the disk and still write more later up to the disk capacity.

Answer 6

If you are asking about disks then

CD-R is Comapact Disc Recordable. You can only record on this CD and cannot edit or erase contents from it

CD-R/RW is Compact Disc Rewriteable- You can record data and then if required edit and format CD to use it for storing other data on it.

If you are asking about CDRom

CD Rom can only Play CDs cannot write new CDs

CD-R/RW can read as well write CDs

Answer 7

A CD-R is only usable once. Once you have written something to it, the content can not be changed.

A CD-RW, with the proper software, can be formatted as if it is a gigantic floppy disk. You can copy files on, delete them off, change them, etc. Just like you would a floppy disk or a directory on your hard drive. If not formatted, they can be used just like a CD-R also.

A formatted CD-RW can only be read on another CD-RW drive, while a CD-R can be read on any drive.

Answer 8

On a CDR-R/W when you have burned something to it you can re-write over it after.
A CD-R can only be used once.
Hope I helped!

Answer 9

CD-R is a write once media. CD-RW can be written to many times. CD-R is less expensive because of the number of times you can write to it.

Answer 10

CD-R can be written to only once, CD-RW can be written to many times (some say 1000 times, some say only a few hundred).