Hard Drive showing incorrect Capacity/Total Size (Not Unallocated Space)

[Matt2737]

Hi, I have a WD 4TB Blue WD40EZRZ drive that shows the wrong Capacity. It does not show the wrong Unallocated space in Windows Disk Management. However it does show strange space using Ease-US Partition Master.

I have it formatted right now as two 1.8 TB partitions, and could have it formatted as a single 3.64TB partition if I wanted to. This doesn't cause any problems when using the drive as a normal windows drive, but it does cause problems when trying to use it in Windows Storage Spaces, which is the main purpose for the drive.

When trying to add to a Storage Space, it has the option for a 1.99TB drive, which is interesting because I have another external 4TB drive hooked up and it shows the option to add that as a 3.64TB drive. The real headache was when I added it to the storage space anyway and then removed it. Then I was unable to get back the unallocated space and the drive was effectively a 2TB drive for a while, until finally after plugging it into the pc directly and letting the startup spin for a while it eventually recovered it, but not the Capacity.

I haven't seen anyone else have this problem that I could find, see screenshots for more examples

http://imageshack.com/a/img924/4832/9crJyq.png
http://imageshack.com/a/img921/7681/RgLxGy.png
http://imageshack.com/a/img922/7667/vOxW4E.png
http://imageshack.com/a/img921/6999/zw28CR.png

Thanks,
Matt

 

[Matt2737]

The external USB enclosure was causing the problem - plugged into the PC directly and the capacity showed up fine.