Can't Burn to DVD

Discussion in 'OS X Mountain Lion (10.8)' started by SnowLeopard2008, Jul 25, 2012.

  1. SnowLeopard2008 macrumors 604

    SnowLeopard2008

    Joined:
    Jul 4, 2008
    Location:
    Silicon Valley
    #1
    I can't seem to burn the ML installer (4.35GB) to a DVD (4.7GB). What am I missing? I don't have a flash drive that is big enough...
     
  2. basesloaded190 macrumors 68030

    basesloaded190

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  3. Major.Robto macrumors 6502

    Joined:
    May 11, 2012
    #3
    MT is not even ment to boot from a dvd,

    Get a usb at about 8gb,
    Better then spending money on dvd dls and you can use it after
     
  4. deeddawg macrumors 604

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    Jun 14, 2010
    Location:
    US
    #4
    FWIW, 8GB flash drives are $6 at Microcenter...
     
  5. SnowLeopard2008 thread starter macrumors 604

    SnowLeopard2008

    Joined:
    Jul 4, 2008
    Location:
    Silicon Valley
    #5
    Is there a difference between booting from a flash drive versus DVD disc? I know a flash drive is faster.

    I know they are cheap, I just don't have a store that sells them near me and I definitely don't want to wait for shipping.
     
  6. heisenberg123 macrumors 603

    heisenberg123

    Joined:
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    Location:
    Hamilton, Ontario
    #6
    yes you need a 8GB USB the file must expand when it makes it a bootable disc

    FYI make sure you make it using one of the many guides posted on here or the web its not just a copy the install file to a stick or dvd that wont make it bootable
     
  7. adztaylor macrumors 68000

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    Aug 20, 2009
    Location:
    Preston, UK
    #7
    Yeah if your going to burn to DVD you need a dual layer DVD. Single layer won't fit. I plan to burn to dual layer as I have some lying round and not any big enough flash drives.
     
  8. SnowLeopard2008, Jul 25, 2012
    Last edited: Jul 25, 2012

    SnowLeopard2008 thread starter macrumors 604

    SnowLeopard2008

    Joined:
    Jul 4, 2008
    Location:
    Silicon Valley
    #8
    This is what I missed. I've been on these forums for over 4 years and I'm quite experienced with this stuff. I know it's not as simple as copying over the download from the MAS. I just forgot that the dmg expands.

    FYI, this dude's guide says it requires 4GB of free space...
    http://forums.macrumors.com/showthread.php?t=1404860

    ^His guide is incorrect. Even using a flash drive, you need an 8GB flash drive. A 4GB flash drive doesn't work. The compressed dmg is 4.35GB...

    I have a 20+mbps connection so I think I'll just copy the installer to one of my externals for future use and install ML using the installer (not a clean install). Then I'll use Internet Recovery to do a clean install.
     
  9. Major.Robto macrumors 6502

    Joined:
    May 11, 2012
    #9
    I tried a dvd for 10.7 and it was still booting after a half hour.

    I gave up and just used my ipod to boot off,

    So much easer.

    DVds are just super slow and the installer is not ment to boot of dvd at all, now.


    apple only sells it on flash drives, so thats kind of a hint
     
  10. adztaylor macrumors 68000

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    Aug 20, 2009
    Location:
    Preston, UK
    #10
    I cleaned installed Lion from a DVD and found no issues, the installer did work on DVD.
     
  11. SnowLeopard2008 thread starter macrumors 604

    SnowLeopard2008

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    #11
    Yea, me too. My biggest flash drive is 4GB because I don't need 8GB of space. I hardly use flash drives. I used a regular normal single layer DVD for Lion although the Lion installer is 3.8GB or so versus the 4.35GB of ML.
     
  12. adztaylor macrumors 68000

    Joined:
    Aug 20, 2009
    Location:
    Preston, UK
    #12
    Same, I hardly use flash drives either. I'm just glad I do have some dual layer DVDs lying round doing nothing otherwise I would go out and buy a 8GB memory stick.
     
  13. TsunamiTheClown macrumors 6502a

    TsunamiTheClown

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    Fiery+Cross+Reef
    #13
    Thanks for the heads up. Deff want to have a bootable USB.
     
  14. Major.Robto macrumors 6502

    Joined:
    May 11, 2012
    #14
    Well I made my disk like how the guide said so, and it failed to work in my imac and macbook, I just gave up and made my ipod a installer because its 16gb
     
  15. SnowLeopard2008 thread starter macrumors 604

    SnowLeopard2008

    Joined:
    Jul 4, 2008
    Location:
    Silicon Valley
    #15
    I think I left my DL-DVDs at home (I'm in college) so I'm SOL with that method.

    If anyone has a fast (relative term) internet connection, this guy's method doesn't require any kind of flash drive.
    http://forums.macrumors.com/showthread.php?t=1410282
     

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