You can extend shrink or resize volume with Windows 8 built-in Disk Partition Management.
Just right click My Computer, select Manage -> Storage -> Disk Management, open Windows built-in Disk Management, you can do following operations on Windows 8 32 bit or 64 bit by Disk Management.
Create, delete and format volume
Add or change drive letter of the volume
Extend and shrink volume
Explore, open volume
Set partition as active, etc.
Shrink volume and extend volume with Disk Management
Windows 8 built-in Disk Management has ability to shrink volume and extend volume. Just right click on “My Computer”, choose “Manage”, and you will get a popup window, choose “Disk Management” in left navigation bar. And then, your hard disk condition will show.
Then you need to right click on the partition which you want to shrink, and choose “Shrink Volume”, then type a number how large space you want to free up.
When there is some unallocated space next to the partition that you want to extend and right click the partition that you want to extend, choose “Extend Volume”, and type the number of that unallocated space. Then the Windows 8 partition resize is done.
There are many nice features of Disk Management Tool in Windows 8 but it still has many defects in partition management. You can do the followings with MiniAide Magic Partition but Windows 8 doesn’t have these features.
In this condition, you have to seek a nice partition software for Windows 8. MiniAide Magic Partition is your best choice. It’s a comprehensive free hard disk partition manager and system optimization software for Windows-based administration. It works well with Windows 8 even its free edition home edition.
The following is step-by-step instruction to extend system partition (C: drive).
1. Launch MiniAide Magic Partition.
If there is no unallocated space behind the system partition, please follow the below steps. If there is unallocated space behind the system partition, please directly go to step 4.