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  1. #1


    Member Since
    May 31, 2010
    Posts
    41
    External harddrive incompatible?
    I have a 1.5TB external HDD from Western Digital which I bought recently and have a lot of stuff on. I can access the files and put them onto my Mac, but for some reason it won't let me copy/cut and paste things from my Mac onto my harddrive. Any ideas as to why this is? It's quite frustrating, and doesn't happen with my PC!

  2. #2

    joshbrez's Avatar
    Member Since
    Jan 29, 2007
    Location
    Chicago, IL
    Posts
    199
    Specs:
    MacBook Pro 15" 2.33 GHz 3 GB RAM
    It is likely that the drive is formatted with the NTFS file system, which Mac OS X can read, but not write to. You'll need to have your drive formatted in FAT32 for it to work with both a Mac and a PC.

  3. #3


    Member Since
    May 31, 2010
    Posts
    41
    Gotcha.

    ...How do I go about doing that?

  4. #4


    Member Since
    Jan 18, 2010
    Posts
    1,466
    Specs:
    2.8 GHz 15" MacBook Pro OS X 10.7.x & some old Macs
    Open up Disk Utilities in your Applications Utilities folder and then select your external hard drive and under the Erase tab pick the format you want and then click on erase. Make sure to backup anything you want to save on the drive before doing so because it will all be deleted.

  5. #5

    dtravis7's Avatar
    Member Since
    Jan 04, 2005
    Location
    Modesto, Ca.
    Posts
    28,764
    Specs:
    iMac 2010 27" QuadI7 OSX10.11, iMac 2008 OSX10.11, MBP Late2011OSX10.11 , iPhone 3GS Note 8!
    What version of OSX are you running? If 10.6 Snow Leopard, there is a way to enable full Read/Write support for NTFS.

  6. #6


    Member Since
    May 31, 2010
    Posts
    41
    I have Snow Leopard... Brand new MacBook Pro 2.66GHz.

    Is there a way to do that without deleting all the info?

  7. #7

    chscag's Avatar
    Member Since
    Jan 23, 2008
    Location
    Fort Worth, Texas
    Posts
    47,121
    Specs:
    27" iMac i5, 3.2 GHz, iPad 3, iPhone 5c, iPhone 6+, 3 iPods, El Capitan
    Yes. Download and install the free NTFS Mounter. As dtravis pointed out it will turn on NTFS read - write support in Snow Leopard.

    Regards.

  8. #8

    dtravis7's Avatar
    Member Since
    Jan 04, 2005
    Location
    Modesto, Ca.
    Posts
    28,764
    Specs:
    iMac 2010 27" QuadI7 OSX10.11, iMac 2008 OSX10.11, MBP Late2011OSX10.11 , iPhone 3GS Note 8!
    Forgot all about NTFS Mounter.

    I was going to show him the terminal command. Thanks Chscag for that! I can't believe I forgot that little utility.

  9. #9


    Member Since
    Jan 18, 2010
    Posts
    1,466
    Specs:
    2.8 GHz 15" MacBook Pro OS X 10.7.x & some old Macs
    Quote Originally Posted by dtravis7 View Post
    Forgot all about NTFS Mounter.
    You are not the only one.

  10. #10


    Member Since
    Jun 12, 2010
    Posts
    4
    Quote Originally Posted by dtravis7 View Post
    Forgot all about NTFS Mounter.

    I was going to show him the terminal command. Thanks Chscag for that! I can't believe I forgot that little utility.
    Would you be able to post the terminal commands? I'm new to the mac world & knowing more commands wouldnt hurt
    15" Macbook Pro i7

  11. #11

    dtravis7's Avatar
    Member Since
    Jan 04, 2005
    Location
    Modesto, Ca.
    Posts
    28,764
    Specs:
    iMac 2010 27" QuadI7 OSX10.11, iMac 2008 OSX10.11, MBP Late2011OSX10.11 , iPhone 3GS Note 8!
    10.6: Enable native NTFS read/write support - Mac OS X Hints

    I would still use NTFS mounter just because it's easy and there is no chance for an mistake at the command prompt.

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