I think ck1968 posted on january 26, 2014 had the right answer but I tired of trying to get the USB drive to share correctly. I went for a software solution called Macrium Reflect (free). You can download it here:
http://download.cnet.com/Macrium-Reflect-Free/3000-2242\_4-10845728.html
or here:
http://www.macrium.com/reflectfree.aspx
It worked like a charm and saved a 39.86 GB image copy (included 9MB dell backup utility, 5.11GB recovery partition and 34.74 GB image copy of hard drive) onto a 32GB sandisk cruzer glide (compression) leaving approx. 9 GB free on the cruzer glide.