I need help. ive got a HDD i need to format, but to boot the computer to wipe it, i need antoher HDD. but i cant plug more than 1 HDD in, because my PSU has only one power cable for my HDD. i have another identical PSU in another computer, so i thought it would be a good idea to plug the power from that psu into the second HDD to give it power so it could boot, then from there, i could format the first HDD and have 2 working HDD's again. the problem with the 1st one is that the motherboard bios wont recognize it, which is pretty problematic as you may guess.