DVD data disc: burn more than once?

Discussion in 'Mac Basics and Help' started by Christopher11, Oct 29, 2009.

  1. Christopher11 macrumors regular

    Christopher11

    Joined:
    Feb 10, 2007
    #1
    I recently burned a project to DVD. It's a data disc, and seems to have worked fine, about 1.2 GB of the four available on the DVD-R I burned with a Superdrive on my G4 desktop.

    I told it to write session in Toast 7 Titanium, but when i try to burn something else to the disc, Toast rejects it. With DVD's, can you only burn one data disc? No multiple sessions? It's okay if this is the case, I just want to know. Thanks so much for any replies.
     
  2. John Doe 57 macrumors 65816

    John Doe 57

    Joined:
    Jan 26, 2008
    Location:
    Los Angeles, CA
    #2
    DVD-R means writable only once

    DVD-RW means rewritable multiple times
     
  3. cube macrumors G5

    Joined:
    May 10, 2004
    #3
    Some applications support multisession DVD-+R, but there is no standard.
     
  4. John Doe 57 macrumors 65816

    John Doe 57

    Joined:
    Jan 26, 2008
    Location:
    Los Angeles, CA
    #4
    More info:

    DVD+R is a format for optical data storage. It is similar to, but incompatible with, the earlier DVD-R standard. A DVD+R is a write-once optical disc with 4.7 billion bytes of storage, generally used for nonvolatile data storage or video applications.

    Data on a DVD-R cannot be changed, whereas a DVD-RW (DVD-rewritable) can be rewritten multiple (1000+) times. DVD-R(W) is one of three competing industry standard DVD recordable formats; the others are DVD+R(W) and DVD-RAM.
     
  5. cube macrumors G5

    Joined:
    May 10, 2004
    #5
    That is not the point. CD-R has a multisession standard. You can add, update, and delete files without recovering the already burned space until the disc is full, in a chain of sessions.
     
  6. JediMeister macrumors 68040

    Joined:
    Oct 9, 2008
    #6
  7. Christopher11 thread starter macrumors regular

    Christopher11

    Joined:
    Feb 10, 2007
    #7
    Yeah, exactly. I burn multi sessions CD-R's in Toast until the disc is full, as Cube said. So i was wondering if this is possible with a DVD-R. It's okay though, either way. Thanks so much for all the responses and info.
     

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