some of my comps have only two drives with three drive letters, my main machine has four internal drives with seven assigned drive letters/partitions and THREE external hdds(c,d,e,f,g,i,k,l,m,&p) + typically four usb sticks , my b2 has four drives with four letters, and space to ADD FOUR more hdds internally, my b3 has only 3 hdds with three letters, my b4 has a boot ssd a 500gb boot hdd (with two partitions, and (currently seven but can load NINE) hdds with varing numbers of partitions(currently c,y,f,g,i,l,n,x + networks drives), BUT my lev 530 laptop has ONE drive (750gb) with four partitions(xp,win7 x86,win7x64 and data)
harpo