Linux or Windows? Either way use the 40gb for music and movies and split the 120 in half: hda1= Bootspace if linux (100mb) o/s and programs if windows (60gb) hda2= OS Core and programs if Linux (60gb) (subpartitions recommended) 3dstuff and vid render space if windows (60gb) hda3= If linux then this is 60gb for 3dstuff and vid render space hdb1= Mp3s, Divx, Images....