Generally can be divided into four areas. The system disk is disk C, and its size can range from 80g to 120g. Software disk D, document disk E and entertainment disk F, as for the size of the last three disks, it depends on your data capacity allocation. If there are more data of the corresponding type, you can score more. If you are not sure, you can divide it equally, that is, you can type 130 g for each set.