When you purchase a new computer, the hard drive partitions have been already configured for you and there are two situations:
AOMEI Partition Assistant provides a set of integrated tools to repartition your hard drive in Windows 8 with a high degree of data protection. The Standard Edition is completely free hard disk partition software and works well with both 32 bit & 64 bit versions of Windows 8.
Tip: Free Download AOMEI Partition Assistant Standard Edition (File Size: 3.66 MB)
Step1: Install and launch AOMEI Partition Assistant Standard Edition. All the hard drive partitions in Windows 8 will be displayed as below:
Step2: Right click on D partition and select "Resize Partition".
Step3: Click "OK". You can find there is a block of unallocated space behind D partition. Then, select C drive and drag the right slider bar rightwards.
Step4: Now you can preview the Windows 8 hard drive has been repartitioned and the size of both C and D partition has been changed. To save the changes, click "Apply".
As ALL-IN-ONE partition manager and powerful disk management tool, AOMEI Partition Assistant also allows you to do the following operation in Windows 8: