To enlarge the size of disk partition in windows 7 then you should have free spaces. if the hard drive no free space then you can make in advance, to make free space you can delete the other partition or decrease the size of other partitions for any free spaces. Can I look in my previous post about how to remove disk partition on windows 7.
To enlarge the size of disk partition in Windows 7, can perform the following procedure:
1. In search box type in computer management and then enter
2. Select the partition that will be in the larger size, in the example we will increase the size of the partition Win7
Right click on the Win7, select Extend Volume ...
3. Choose Next
4. Just leave the default if you want to use all the free spaces
Click Next
5. Click Finish
6. Now there are 4 partitions on your hard drive, Win7 has changed its size to be larger than its original size