Dear all thanks for the welcome message. i do have a problem with my lenovo thinkpad laptop's c drive memory space. its always full. issue seems to.... Solved: i've had my u400 for about a week and the d drive is full and my comp freezes occasionally and i think this is the problem. i know next to. C: drive almost full! (new pc solved c drive almost full- laptop win a c & d drive this is standard for dell/hp/compaq/lenovo etc. open windows start. Understanding hard drive partitions on lenovo systems with microsoft windows 7 and windows 8 - thinkcentre, thinkstation, thinkpadunderstanding hard drive partitions.