Using CD-RW and Rewriting/Erasing

Discussion in 'Mac Basics and Help' started by Patrick Bateman, Aug 30, 2005.

  1. Patrick Bateman macrumors member

    Sep 10, 2003
    I've been using some cd-rw discs for music and backing up my photos. What are the capabilities of rewriting and erasing stuff that I put on the discs since I can't seem to erase or rewrite anything I've already put on them? Thanks.
  2. MattG macrumors 68040


    May 27, 2003
    Asheville, NC
    Not sure I really understand the question, but...

    You can't just delete stuff from them on the's not like a hard drive in that regard. You can write and re-write, but to totally "erase" a disc, you have to use either something like Toast or Apple's Disk Utility.
  3. brandisk macrumors newbie

    Oct 6, 2009
    Mac Rewrite

    I found this post and was having issues myself and thought I should ask for assistance. I recently purchased some 4G rewritable DVDs for data and image storage. I can do the initial burn, but am not sure how to add additional items to the DVD. I do not want to erase or distort the original burned data. How would I go about doing this?
    Thank you.
  4. John Doe 57 macrumors 65816

    John Doe 57

    Jan 26, 2008
    Los Angeles, CA
    You can't just add data to a DVD once it has been burned. You would have to erase the DVD, add the data, and then burn it again. Erasing is really not that difficult. You can use Toast or Disk Utility which is already on your Mac.

    1. Insert DVD or CD

    2. Open Disk Utility (In Your Utilities Folder)

    3. On the side panel in Disk Utility, you CD/DVD Drive will be listed with a CD or DVD underneath it.
    Picture 1.png

    4. Single Click on the CD or DVD

    5. A new window appears with 3 tabs; First Aid, Erase, and Restore. Select Erase.
    Picture 2.png

    6. Decide what option you want; Quick Erase or Completely. Quick Erase is a short process and Completely takes much longer but is more efficient. It is also necessary when you cant save to or read from the disc properly.
    Picture 3.png

    7. Click Erase

    Your CD or DVD should be erased and ready for new data to be burned onto it.
  5. Wakakanada macrumors regular

    Oct 21, 2007
    Vancouver, BC, Canada
    Thanks for the quick and easy solution to my problem. Used Toast>Recorder>erase:)
  6. John Doe 57 macrumors 65816

    John Doe 57

    Jan 26, 2008
    Los Angeles, CA
    No problem! The Toast solution is a good one too and relatively easy.
  7. vishalsheth macrumors newbie

    Jul 18, 2009
    My CD is CD-RW but in disk utility it's showing as CD-R. Any solution to erase and write data?

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