G-Drive USB formatted as EXFAT cannot be mounted in Mac OS High Sierra


#1

Hi,
I have a 10TB G-Drive USB (not USB-C) harddisk and I have formatted it to ExFAT via a Window 7 PC.
It works fine with the PC.
I later on bought a new mac book pro with touch bar with macOS High Sierra 10.13.3,
and found out that the G-drive is not mountable by the mac book.

I can find the hark disk in disk utility with the correct name but the harddisk name is greyed and do not allow me to mount it. First-aid was done and it was fine.
The hard disk is not corrupted as I can still use it with PC.

If it helps, I am using an adaptor to convert the usb 3.0 cable to usb-C for the macbook.

I would like to know how to solve the issue as I need the harddisk to be used in both PC and Mac, so I need it to be ExFAT.

Thank you very much!


#2

In some cases exFat formatted drives won’t mount on the Mac OS due to slight corruptions that it feels prevent it from mounting. You can either run a repair on the drive on Windows or use a terminal command on Mac to rebuild the directory.

On Mac in the terminal you can do the following:

sudo fsck_exfat -d disk*s*

Replace * with the drive numbers as shown in disk utility.
When it prompts: Main boot region needs to be updated. Yes/No? Type yes.