i bought a 4tb 3.0 usb touro external from newegg which i planned to take out and use as an internal harddrive in my PC. After destroying the enclosure and putting it into my PC as a second internal and formatting it, it only pops up as having 1.63tb of space. there is no unallocated space or anything anywhere. i'ved disk management (even partition master) and can't find the remaining space anywhere! It worked fine when it was an external (with 3.5tb space) so that unallocated space is hiding somewhere...but i dont know how to get it back. Any tip or information will be greately appreciated. Also the hard drive has been formatted with GPT also, it just shows 1.61tb and nothing else. any tip or help will be greately appreciated!