I cannot format the WD 3Tb hdd

WD Internal Drives Desktop & Mobile Drives
8

AIUI, Windows 7 and Vista both automatically align partitions to 4K boundaries, whether the drives are AF or non-AF. You don’t need to run any WD/Acronis alignment utility.

Assuming an average access time of 100 MB/s, a full format of a 3TB drive should require …

(3 x 10^12) / (100 x 10^6) / 3600 = 8.3 hours