I was trying to set up the 3TB drive as a mirror for a 2TB drive. It was just fine (showed all 3TB) and when I tried to create a new partition, mirror wasn't an available option.
I didn't understand why, so I tried converting back to basic disk and to MBR (in desperation) and then the drive started only showing as 746.39GB.
Does anyone know how I might get it to show all 3TB again? I tried uninstalling the disk from device manager and reinitializing. I tried "CLEAN" from the diskpart tool, but nothing. It always comes back as 746Gb.
If I can't get it to mirror, I don't guess it matter, so if anyone has any input on that too, it would be appreciated.