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How to Extend/Increase C drive in Windows 8

Updated on Dec 05, 2018 by Tracy King to Partition Master

When the system C drive runs out of space, most users come up with the idea to extend C drive with Disk Management in Windows 8/8.1. If you prefer an easier free tool, EaseUS partition manager software - Partition Master Free will make it easy for you to extend C drive in Windows/8/8.1.

Windows 8 disk management features

Right-click My Computer, select Manage -> Storage -> Disk Management, open Windows built-in Disk Management, you can do following operations on Windows 8 or Windows 8.1 32 bit or 64 bit with Disk Management:

  • Create, delete and format volume
  • Add or change the drive letter of the volume
  • Extend and shrink volume
  • Convert basic disk to dynamic disk
  • Explore, open volume
  • Convert MBR disk to GPT disk or convert GPT disk to MBR disk
  • Convert dynamic disk to basic disk, but you must delete all dynamic volumes before converting.
  • Mark partition as active, etc.

Although there are some improvements in Disk Management in Windows 8, it still has many limitations in partition management. (Please refer to the comparison table below). Because some advanced partition management in Windows 8 is still unavailable when you find your system partition is out of space which will be in red as below:

Windows 8 low disk space

In this situation, people have to seek the best partition manager software for Windows 8. EaseUS Partition Master, a comprehensive free partition software that can have more useful functions than Windows Disk Management.

EaseUS Partition Master VS Windows 8 Disk Management

Features EaseUS Partition Master Windows 8/7 Disk Management
Merge partition Support Not support
Move partition Support Not support
Resize dynamic volume Support Support
Copy dynamic volume, copy disk/partition Support Not support
Extend NTFS system partition without reboot Support Support
Create, delete, format, change the drive letter, set active Support Support
Extend/shrink FAT Support Not support
Extend/shrink NTFS Support Support
Partition Recovery Support Not support
Hide, label, check partitions Support Not support
Delete all partitions Support Not support
Create WinPE bootable disk Support Not support
Support GPT disk Support Support

Recommend: Extend C drive in Windows 8 with EaseUS Partition Master

As magic Windows 8 disk manager, EaseUS Partition Master can extend Windows 8 32-bit and 64-bit system partition safely with simple operations by its "Resize/Move partition" feature. Moreover, EaseUS Partition Master can extend NTFS system partition without reboot.

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 Windows 10 is supported

Video tutorial for how to manage Windows 8/7 partition with EaseUS Partition Master Free

The following is step-by-step instructions to extend Windows 8/7 system partition:


Step 1: Launch EaseUS Partition Master

Run EaseUS Partition Master

Step 2: Increase C drive space

1. Shrink partition to free up unallocated space:

Right-click on a partition next to the C: drive and select "Resize/Move".
Drag either end of the partition to shrink and leave unallocated space behind the system C: drive and click "OK".

2. Right-click on C: drive and select "Resize/Move".

Extend System partition

3. Drag the system partition end into unallocated space so to add space to C: drive.

Add space to C drive

Step 3: Keep all changes to extend C: drive

Click the "Execute Operation" and click "Apply" to keep all changes so to extend the system C: drive.

Confirm to extend system C drive

After EaseUS Partition Master executes these operations, you will see the Windows 8 or Windows 7 system partition has been extended successfully in Disk Management.