Difference Between CDR and CDRW

Difference Between CDR and CDRW

When they discovered that data could be stored on several discs as films or as recorded data, the entertainment business was revolutionized. The cassette player and the rewinding cassette are the earliest ones. CDs, discs, and tape recorders are among the other options.

Though cassettes have been mostly phased out, CDs have remained popular. Their capacity to retain data for a long period or their usefulness in transporting data is the reason behind this. There are two kinds of CDs that many people have never heard of: CDR and CDRW.


There is a distinction between CDR and CDRW in that CDR cannot be erased or rewritten, but CDRW may if the present data is wiped, despite both with storage capacities of 700-800 MB. So CDRW can be repurposed.

A CD-R or CD-RW cannot be rewritten. These CDs have a reflective metal bottom and a dyed top. They are the most regularly used CDs. CD players can read and play data stored in this dye.

This is another CD format that contains 700 to 800 MB of capacity, however, the data may be overwritten. CDRW or Compact Disc Re-Writeable Only if all of the preceding data is deleted is this possible. Unlike the dye-drenched version, this one is constructed of reflecting material.

What is CDR?

Reflective metal on the bottom and dye on the top make up the CDR (Compact Disc Recordable) kind of CDs. A 700-800 MB storage capacity makes them ideal for long-term data storage.

These CDs are just for reading. Data that has been written on a disc can never be recovered. The information contained on a CDR can’t be altered in any way. In other words, it is a multi-session disk that can store a variety of data kinds, including audio and video.

Afterward, the data is turned onto CD-ROM so that it may be accessed. A CD player that can read and play CDs is often used for this.

The vast majority of CD-Rs are compatible with all CD players.

What is CDRW?

It’s a sort of CD that can both store and display data. CDRW or Compact Disk Re-Writable It has a storage capacity of 700-800 MB. If the previously recorded data on a CD-RW is deleted, the data may be rewritten. So, a CD-RW can be repurposed.

CD-RW has a drawback in that it does not work with all CD players. It’s not possible to play CDRW on old CD players.

CDRW is likewise more expensive than CDR in terms of price. This is because the data on a CDRW may be rewritten and reused several times.

Difference Between CDR and CDRW

  • CD stands for Compact Disc Recordable, whereas CD-RW stands for Compact Disc Re-Writeable. Since they both read from CDs, they’re usually referred to as CDs as well.
  • Despite the fact that all CDs are made of reflective metal, the distinction between CDR and CDRW is that CDRW employs special metal on top, whereas CDR uses dye.
  • It is possible to see 700-800 MB of data contained in CDR and CDRW. CDRW, on the other hand, can be rewritten with new data once the old data is removed from its memory.
  • CDRs cost less than CDRWs. CDRW, on the other hand, is more expensive since it can be rewritten.
  • There is also a difference in the speeds of the two discs. CD players can read and understand CDR data more quickly than CDRW players, despite the fact that CDR data cannot be re-written.
  • CD-R is backward compatible with older CD players, but CD-RW isn’t. CDRW files cannot be read by CD players that are more than a decade old.
  • However, despite the fact that CDRs cannot be re-written, they are widely utilized as long-term data storage devices. However, the primary function of a CDRW is data transport.


Data may be saved and accessed several times by the customer via a variety of devices. These include cassettes, CDs, and DVDs, each of which needs its own player. In addition to this, there are a wide variety of CD formats to choose from.

There is only one CD format that can be read and played on all CD players: CDR or Compact Disc Recordable (CDR). It has a storage capacity of 700-800 MB and is utilized for long-term data storage since the data saved cannot be rewritten.

Another CD format that cannot be read by older CD players is CDRW or Compact Disc Re-Writable. Instead of dye, they are constructed of a specific metal on top, which makes them different from CDRs. Additionally, it contains up to 800 MB of storage, although that data may be rewritten, therefore it’s largely utilized for data transfers.

The data recorded on a CDR can only be read or played; it cannot be wiped or rewritten as it can on a CDRW. Once the data recorded in CDRW is wiped, the new data may be written to it. This implies that the CDRW data may be modified.