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I encountered a problem after upgrading to High Sierra. I have a mobile hard drive which is NTFS formatted (USB 3.0).

When I connect my hard drive to the computer, it doesn't appear in Finder. It can be found in the Disk Utility but it is grayed out. Mobile hard disk is working properly because in other windows computer connection is fine, before the upgrade (macOS 10.12) can also be displayed in finder.

Hardware: MacBook Pro 13 2017 16 GB RAM & 256 GB SSD without Touch Bar.

  • Were you able to read and write to the NTFS disk from macOS before the High Sierra upgrade? – Alistair McMillan Oct 9 '17 at 17:50
  • Yes. The Mac comes with the system is 10.12, It can read NTFS default and write after install paragon NTFS 15. There was a problem after upgrading 10.13. Then I downgrade to 10.12 and can be used. It can not be used after the upgrade again, both read and write. – xuyuehang Oct 10 '17 at 1:58
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I also have similar problem, but luckily, it can read the drives. Perhaps your drive was not mounted. Now I temporarily use virtual Windows through VirtualBox to write to the drives while waiting for a complete solution.

My machine is iMac late 2015.

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