I have a WD Purple 8tb internal hard drive that I have placed into a segate agent box. It was working fine until I deleted the partitions and tried to format it. Now only 1.3tb is seen. I've tried several different disk managemnet programs, I've used diskpart. It is inittilaized as GPT, bit I can't get it to show all 8tb. I have a Windows 10 64bit laptop. I know the full space is still there since I tried to install Windows 7 on it using a 9desktop, but alas, I still can't get all 8. Any suggestions?