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  1. #1

    Join Date
    Jun 2008
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    Default External hard drive read only on my mac?

    Hi, have a Lacie external hard drive which works fine on my Windows PC's, but doesn't seem to work on my Imac or Macbook? It's plugged directly into the USB port (not on a hub) and I've even tried it with a doubler lead so power shouldn't be an issue. I can see the drive, view contents etc it just comes up with a message saying the drive can't be altered? Any hekp appreciated

  2. #2

    Join Date
    Jan 2005
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    BrizVegas
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    Default

    I'll have to guess that it's formatted NTFS for the windows side

    At the moment my understanding is that OSX does not write NTFS
    have a look at:

    How-to: Read and Write NTFS Windows Partition on Mac OS X - Stepcase Lifehack

    Hope this helps

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  3. #3

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    Jun 2008
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    Brisbane
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    Default

    I found the solution. Simply reformat / Partition the drive on the Mac, Using disk utilities as Fat 32, and oila, can use on Mac and Windows. Was important to me as I use the drive to transfer files from My mac to my work Windows laptop.

  4. #4
    gehenna's Avatar gehenna is offline Big things have small beginnings

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    Feb 2005
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    Wellington, New Zealand
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    Default

    Quote Originally Posted by fender22 View Post
    I found the solution. Simply reformat / Partition the drive on the Mac, Using disk utilities as Fat 32, and oila, can use on Mac and Windows. Was important to me as I use the drive to transfer files from My mac to my work Windows laptop.
    Just be aware that with Fat32 you won't be able to transfer files larger than 4GB to the drive....if that's a requirement you'll need to be formatted with NTFS.

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