Burning CDs - The Missing megabytes

Discussion in 'Mac Apps and Mac App Store' started by grobelaar, Sep 13, 2004.

  1. grobelaar macrumors newbie

    Joined:
    Feb 9, 2004
    #1
    OK, so I just noticed that my Mac OS X can only burn 660megs onto a CD. What is this? I take everyone is going to say you need Toast. Is this so? Then let me know.

    In the meantime I'll just say cheers Apple, what a waste of time - 40megabytes!!! what is that all about...

    Any hints and tips, gratefully rec'd
     
  2. wrldwzrd89 macrumors G5

    wrldwzrd89

    Joined:
    Jun 6, 2003
    Location:
    Solon, OH
    #2
    Nope, nothing's missing - 667.57 MB is the true capacity of a "700 MB" CD. Likewise, a "650 MB" CD can only hold about 619.89 MB. The discrepancy is related to the way disk makers report capacity. In manufacturing terms, 1 megabyte = 1000 kilobytes, not 1024 (which is the true figure). Here's how I got the capacity figures:
    700 * 1000^2 / 1024^2 = 667.572021484...
    650 * 1000^2 / 1024^2 = 619.888305664...
     
  3. ChrisFromCanada macrumors 65816

    ChrisFromCanada

    Joined:
    May 3, 2004
    Location:
    Hamilton, Ontario (CANADA)
    #3
    This is the same reason an 80 Gig HD is only 74.52 Gigs. I occurs on all platforms as explained in the above post
     
  4. jeremy.king macrumors 603

    jeremy.king

    Joined:
    Jul 23, 2002
    Location:
    Fuquay Varina, NC
    #4
    Even Apple uses this marketing misnomer which is really the fault of hard disk makers...

    The iPod line just doesn't sound as appetizing in sizes of 19.03 and 38.15 GB :p
     
  5. crazzyeddie macrumors 68030

    crazzyeddie

    Joined:
    Dec 7, 2002
    Location:
    Florida, USA
    #5
    I've never had that problem using Toast... I can usually fit 702+ MB on a CD-R.
     
  6. cb911 macrumors 601

    cb911

    Joined:
    Mar 12, 2002
    Location:
    BrisVegas, Australia
    #6
    same here eddie, i usually get 700MB on a CD with Toast.

    maybe it's somehting to do with Disk Utility?
     
  7. grobelaar thread starter macrumors newbie

    Joined:
    Feb 9, 2004
    #7
    Yeah, I'm sorry but this doesn't hold. I can get 700mb on a Hybrid format on my OS 9.x desktop, and I mean 700 real mb, on my 700mb CDR...

    If I take the same files and same CD and burn them on the PC burner in the office then they also fit...

    So what gives?
     
  8. wrldwzrd89 macrumors G5

    wrldwzrd89

    Joined:
    Jun 6, 2003
    Location:
    Solon, OH
    #8
    I have absolutely no idea! I'm completely stumped.
     
  9. grobelaar thread starter macrumors newbie

    Joined:
    Feb 9, 2004
    #9
    Well from what I can ascertain Apple simply doesn't seem to what to risk us, little Apple users from buring 700mb CDR. I believe a 700mb CDR is pretty much a 650mb CDR but with slightly more area to burn... (a few years ago some people even ventured to make a 90minute CDR...

    Apple in its infinite wisdom in making the worlds most advanced OS, believe that 650mb is enough. This inspite of the rest of the world sat safely assume CD = 700mb, leaving me with a load of CDs that I can copy on my new computer, leaving me sat looking rather more affectionately at my aging G3, OS9 mac, which I was seriously considering get rid of...

    What an utter crock, I've submitted a bug report to Apple, this is just complete rubbish...
     
  10. grobelaar thread starter macrumors newbie

    Joined:
    Feb 9, 2004
    #10
    Oh and maybe they feel they need to give Roxio a little bit of revenue by only giving us half-arsed CD burning capability. I'm soo annoyed, I don't know how much I paid for this machine - the extras cost just keep mounting...
     
  11. yellow Moderator emeritus

    yellow

    Joined:
    Oct 21, 2003
    Location:
    Portland, OR
    #11
    Wow.. such Anti-Apple animosity over 40MB. Switch to decaf. Seriously.
     
  12. grobelaar thread starter macrumors newbie

    Joined:
    Feb 9, 2004
    #12
    I'm not here to butter up Steve Jobs et al. i think my investment in Apple technology, not to mention philosophy over the last 15 years entitles me to offer criticism - 650mb CDR is not acceptable in my book. All my work is backed up onto double 700mb archive CDs, if one fails, how am I to simply duplicate a new one?

    As it goes, I found some help from my favourite music forum, away from the fawning fandom...

    http://www.projectomega.org/subcat.php?lg=en&php=products_firestarter
     
  13. yellow Moderator emeritus

    yellow

    Joined:
    Oct 21, 2003
    Location:
    Portland, OR
    #13
    Buttered or not buttered, I care not. But it seemed like you were about to go and shake a baby over this. Like Apple purposefully limited size disk burning in thier free, built-in burning software, just to kick YOU in the pants. Glad you found yourself a solution. In the future, http://www.versiontracker.com/macosx/ is your friend.
     
  14. GeeYouEye macrumors 68000

    GeeYouEye

    Joined:
    Dec 9, 2001
    Location:
    State of Denial
    #14
    Disk Utilities can burn the full 700 (but only 700, not the 700-705 available on most CD-R's). It's the Finder, and only the Finder, which can't burn the whole thing. I think this is actually due to a "converted twice" bug, but it could be a cripple... dunno.
     

Share This Page