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seab

macrumors newbie
Original poster
Nov 27, 2018
1
0
Hi,

I recently get a new internal storage hard drive, a NAS Seagate Ironwolf 4tb.
I decided to format it in MS-FAT because this is how I used my previous external usb disk and it was great to switch to Windows if needed. ( I Never used it in Windows, it was just a Plan B )
Everything worked fine for a few weeks.
I upgraded to Sierra and this disk is now unavailable :
- I can see it in DIsk Utility, but it is unmounted, I cannot mount it, diagnostics show that everything is fine with the disk.

I tried to boot with a Yosemite older disk that I kept for this kind of situation, and same thing the drive is not avalaible, and cannot be mounted.

Please help.... This disk countains videos and photos I need for work. :(

Thanks
 
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