External HDD is not formatting from NTFS to exFAT

By sean howells
Sep 25, 2012
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  1. Basically im trying to use my hdd on my mac which wont show up in disk utility, desktop or finder.
    but on my windows pc it shows so when I try to format it from NTFS to exFAT the message: unable to format comes up what do I do
  2. jobeard

    jobeard TS Ambassador Posts: 13,342   +296

    Delete the partition and start over.
  3. SNGX1275

    SNGX1275 TS Forces Special Posts: 12,465   +289

    I wasn't aware that you could format anything other than flash drives as exFAT. I thought I had tried once on a mechanical drive and it wasn't an option.

    Also, just a FYI, if you format as exFAT on OS X, Windows isn't going to read it. But if you format as exFAT on Windows, OS X likes it just fine.
  4. sean howells

    sean howells Newcomer, in training Topic Starter

    I have managed to change it to exfat now but still won't show on my MBP
  5. SNGX1275

    SNGX1275 TS Forces Special Posts: 12,465   +289

    If its a Western Digital I know some people have had issues with them on Macs until they've updated the firmware and or drivers (they have a TURBO driver). So its worth checking out their site to see if there is an update for your drive. Even if it isn't WD, its probably worth checking the manufacturer's site.

    On side note, were you able to format as exFAT from Windows on a mechanical drive?
  6. jobeard

    jobeard TS Ambassador Posts: 13,342   +296

    Btw: see the WiKi


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