To image a PC we boot from a CD in DOS but we store the images on a memory stick. The problem I found lately is after I select either 1.1 or 2.0 USB drivers my 32GB Sandisk memory stick or my 1TB external hard drive cannot be found. This only happens on new PC's (for example HP DC 6000 PRO SFF) It works fine on a 16GB memory stick or an older PC like a HP D530. Any ideas why this might not work?