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#41
Try running this in an elevated command prompt vssadmin list shadowstorage
Also, disconnect the 1TB drive and see if you can boot OK. If you can reconnect it and Open an elevated command prompt and type diskpart and press enter, when the command prompt responds diskpart, type list volume and press enter. It will show each drive in your system and assign each with a number found on the left. Choose your D drive, which I suspect will be volume 1 (but you can tell by the size), type select volume 1 (or whatever number is assigned to it) and press enter. Then type inactive. Then type exit and press enter until the cmd prompt goes away. Then go back and look in disk management and see if your C drive is listed as active and D drive is no listed as active. That is only if you can boot without D connected.