Q: Hi I have just aquired a Mac Pro 2006, Dual Xeon 266, 3Gb RAM 360GB HD, I have tried to add another 2TB HD but for some reason it is not identified properly and will not erase

I have spoken to Apple tech, who suggested upgrading to Snow Leopard, but reading through the tech specs I believe my Mac Pro can support Lion OS, any thoughts on this matter?  I also added a 2Tb HD, which 10.4.1 the current OS on the machine, does not recognize properly.  Will Snow Leopard solve this problem? Or will I have to remove the 360Gb HD and Format/erase the 2T disk and set it up as the new Boot disk?  JackTar1957