Can't move 7gb .dmg file - need help fast

Discussion in 'Mac Basics and Help' started by npriess, Nov 23, 2008.

  1. npriess macrumors regular

    Joined:
    Nov 12, 2008
    Location:
    Denmark
    #1
    Tomorrow TNT will pick up my macbook pro - a replacement is on the way.

    But I have to backup a 7gb .dmg file to an external drive.

    But i fails (error 0)

    What should I do? I have tried with different drives, but same problem occurs.
     
  2. kolax macrumors G3

    Joined:
    Mar 20, 2007
    #2
    Sounds like your backup drive is formatted as FAT32 (MS-DOS) which means the individual maximum file size is 4GB's.

    What is in the DMG? You could try slipping it up into 150 .RAR files.
     
  3. npriess thread starter macrumors regular

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    Nov 12, 2008
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    Denmark
    #3
    It contains a program installation package.

    And yes, my drive is formatted in FAT. Can I format in Mac OS (journaled) and still transfer the files to a windows pc?
     
  4. kolax macrumors G3

    Joined:
    Mar 20, 2007
    #4
    Well, if you reformat the drive you'd loose all the data on it. But if you formatted it to HFS+ then yes, the 7GB file would go on.

    There is software that allows Windows to read the HFS+ file system (MacDrive $50 though).
     
  5. npriess thread starter macrumors regular

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    #5
    HFS+

    Do you refer to the option called: Mac OS (Journaled) ?
     
  6. Schtumple macrumors 601

    Schtumple

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    Jun 13, 2007
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    benkadams.com
    #6
    If you have the app called MacDrive, so windows can access the drives, as MS doesn't bother to give windows users drivers to access mac formatted drivers, then yes windows will recognise it.

    If the windows PC is formatted in NTFS then yes, you can then transfer it onto the windows PCs drive.
     
  7. kolax macrumors G3

    Joined:
    Mar 20, 2007
    #7
    Yep.
     
  8. npriess thread starter macrumors regular

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    #8
    So, (correct me if I'm wrong) NTFS would be the best format to choose?

    It works with both Mac OS and Windows?

    But I guess the mac file format has some other advantages then?
     
  9. ddeadserious macrumors 6502a

    ddeadserious

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    Jul 28, 2008
    Location:
    Plymouth, MI
    #9
    NTFS would be excellent, but Mac OS can't write to it, it can only read.
     
  10. npriess thread starter macrumors regular

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  11. fiercetiger224 macrumors 6502a

    Joined:
    Jan 27, 2004
    #11
    If you don't want to reformat your drive, you can always split the dmg file into "chunks", and then when you want to put it back together into a full dmg file again, you can concatenate the file back together. Here's a program to do it with:

    http://www.xs4all.nl/~loekjehe/Split&Concat/

    Free, and works like a charm. Since you have a 7GB file, just split it into 1000MB chunks, so you'll have seven 1GB files. This may solve your problem moving it to a FAT partition, since FAT only supports up to 4GB file sizes.
     
  12. npriess thread starter macrumors regular

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    Nov 12, 2008
    Location:
    Denmark
    #12
    I already formatted the drive, but thanks anyway :)
     

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