Best way to backup 6GB file for Mac/Windows?

Discussion in 'Mac Apps and Mac App Store' started by 2012Tony2012, Feb 3, 2013.

  1. macrumors 6502a


    Dec 2, 2012
    What's the best way to backup a 6GB file that can be read on both Mac and Windows?
  2. macrumors 68000

    Apr 25, 2012
    Are both computers linked with a network?

    If so, you could create a share on the Windows computer and copy to that share from the Mac.
  3. macrumors 68030


    May 28, 2011
    Suffolk, Virginia
  4. macrumors 6502a


    Jun 17, 2012
    ExFat filesystem is supported by os x /win7 and later iirc
  5. macrumors 6502

    Nov 2, 2010
  6. thread starter macrumors 6502a


    Dec 2, 2012
    Not linked.


    Too big, 6GB, would take months to upload.


    Does ExFat support 6GB file?
  7. macrumors newbie

    Jan 9, 2013
    make a .dmg file

    You can make a .dmg file on disc tools with the size of 6 GB and store your back-up files in it. I have done so with my most important files and saved them on a USB. You could save them on a DVD or whatever.
  8. thread starter macrumors 6502a


    Dec 2, 2012
    I need a backup of the 6GB zip file so that it can be accessed on a windows PC in case my Mac dies.
  9. Moderator


    Staff Member

    May 3, 2009
  10. macrumors G5


    Jul 29, 2011
    Somewhere Back In The Long Ago
    Best way as maflynn says use a USB stick. I frequently use high capacity sticks to transport large files when I just need to take the project and not a Mac.
  11. 2012Tony2012, Feb 4, 2013
    Last edited: Feb 4, 2013

    thread starter macrumors 6502a


    Dec 2, 2012
    Cause Windows can't read ExFAT can it?
  12. macrumors member

    Jul 27, 2012
    Format a USB drive as exFat. Readable and writable by both systems.The largest file I have put on a stick was around 15 GB, so your 6 would be no problem.
  13. thread starter macrumors 6502a


    Dec 2, 2012
  14. macrumors 65816


    Oct 19, 2012
    Forget me....

    if I am wrong, but ALL the FAT versions of file systems can not support a file more than 4 point something GB? I was confronted with a problem like this, a time ago. My solution? Format an USB drive as NTFS (voiding the size limit of FAT) and downloading a utility to read the NTFS....outdated I know....but works for me in the far times of Tiger....(Mac OS X 10.4)...

  15. macrumors member

    Jul 27, 2012
    Yes, I'm sure. I use one every day. As far as formatting using a Mac, I don't know. I formatted my USB drive on my Windows laptop as I am pretty new to Macs, and my new Mini reads and writes to it just fine.
  16. macrumors 68030


    Jul 7, 2009
    Yes ExFAT is supported by Windows, and with the updates as someone else mentioned, supported all the way back to XP.

    ExFAT supports files up to 16EB! So you shouldn't have any problems what so ever.
  17. simsaladimbamba

    Nov 28, 2010
    FAT 16 and FAT 32 have a file size limit of 4 GB minus 1 Byte,
    exFAT can have files of up to 16 ExaByte.


    Overview of the four major file systems (called "Formats" in Mac OS X) used on Windows and Mac OS X, compiled by GGJstudios. You can use Disk Utility to format any HDD to your liking.

    Any external hard drive will work with PCs or Macs, as long as the connectors are there (Firewire, USB, etc.) It doesn't matter how the drive is formatted out of the box, since you can re-format any way you like. Formatting can be done with the Mac OS X Disk Utility, found in the /Applications/Utilities folder. Here are your formatting options:

    HFS+ (Hierarchical File System, a.k.a. Mac OS Extended (Journaled) Don't use case-sensitive)

    NTFS (Windows NT File System)
    • Read/Write NTFS from native Windows.
    • Read only NTFS from native Mac OS X
      [*]To Read/Write/Format NTFS from Mac OS X, here are some alternatives:
      • For Mac OS X 10.4 or later (32 or 64-bit), install Paragon (approx $20) (Best Choice for Lion)
      • For 32-bit Mac OS X, install NTFS-3G for Mac OS X (free) (does not work in 64-bit mode)
      • For 64-bit Snow Leopard, read this: MacFUSE for 64-bit Snow Leopard
      • Some have reported problems using Tuxera (approx $36).
      • Native NTFS support can be enabled in Snow Leopard and Lion, but is not advisable, due to instability.
    • AirPort Extreme (802.11n) and Time Capsule do not support NTFS
    • Maximum file size: 16 TB
    • Maximum volume size: 256TB
    • You can use this format if you routinely share a drive with multiple Windows systems.

    exFAT (FAT64)
    • Supported in Mac OS X only in 10.6.5 or later.
    • Not all Windows versions support exFAT. See disadvantages.
    • exFAT (Extended File Allocation Table)
    • AirPort Extreme (802.11n) and Time Capsule do not support exFAT
    • Maximum file size: 16 EiB
    • Maximum volume size: 64 ZiB
    • You can use this format if it is supported by all computers with which you intend to share the drive. See "disadvantages" for details.

    FAT32 (File Allocation Table)
    • Read/Write FAT32 from both native Windows and native Mac OS X.
      [*]Maximum file size: 4GB.
    • Maximum volume size: 2TB
    • You can use this format if you share the drive between Mac OS X and Windows computers and have no files larger than 4GB.

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