not reading external drive - windows reads it?

Discussion in 'Mac Basics and Help' started by wakkaday, Dec 31, 2015.

  1. wakkaday, Dec 31, 2015
    Last edited: Dec 31, 2015

    wakkaday macrumors member

    Oct 3, 2014
    ok my mac can read via disk utility but im missing 200gb of data

    it says it can't repair and suggest backup

    can anyone advise? another way of fixing this so i can get my old data back
  2. JohnDS macrumors 65816

    Oct 25, 2015
    What format is the external drive in? Apple Extended, FAT32 or NTFS? I assume it is not Apple format or Windows would not be able to read it.

    If that is the case, try repairing the drive from your Windows machine. If that doesn't work, back it up and reformat.
  3. Fishrrman macrumors G5


    Feb 20, 2009
    My suggestions:

    - Take the drive back to a Windows machine that can "see" it.

    - Copy anything you want to save to the Windows machine (for now)

    - Take the drive to the Mac and reinitialize it using "Fat32". It should mount on the Mac desktop.

    - Take the drive to the Windows machine -- does it mount there now?

    - If so, copy the data you saved (on the PC) BACK TO the drive.

    - NOW take it to the Mac. Does it mount? Does the data "show up" ??

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