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Extend C Drive or Increase Partition Size on Windows Server 2008

Finding ways to extend C drive on Windows? This page shows you how to extend c drive volume in 2 easy ways. Just follow the tutorial step by step to extend volume of c drive or increase partition size in Windows Server 2008, Windows 7, Windows 8, Windows 10.

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Page Table of Contents

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Written by

Tracy King

Updated on Apr 22, 2024

Workable Solutions Step-by-step Troubleshooting
Fix 1. Increase Partition Size on Windows Server 2008 with Disk Management Step 1: To extend C drive, just open Disk Management, right click on C drive and select "Extend Volume" option...Full steps
Fix 2. Increase Partition Size on Windows Server 2008 with Server Partition Software. Step 1: Locate the Target Partition; Step 2 :Extend the Target Partition...Full steps

How to extend volume of c drive on Windows 

1."I am running Windows Server 2008. Currently, the basic drive is split into two partitions with NTFS format. Now, I want to increase system partition (C: drive) size. That means I have to decrease the size of the secondary partition to gain some free space. Is there any easy way that can help to increase partition size or extend C drive in Windows Server 2008?"
2. "The C drive is out of space on Windows Server 2008 basic disk, how to expand C drive?"

1. Increase partition size on Windows Server 2008 with Disk Management.
2. Increase partition size on Windows Server 2008 with server partition software.

Are you interested in Windows Server 2003 extend C drive?

Video Tutorial: Extending C Drive in 2 Ways

For a detailed step-by-step guide, please refer to the two methods shown below. You'll get everything in detail and successfully extend your C drive in Windows Server on your own.

Extend volume of c drive on Windows with Disk Management

As you search method on the website or related forum, you may find a built-in Disk Management to extend c drive. All Windows edition, including Windows Vista, Windows Server 2008, Windows 7/8/10, has such a free tool.Similar to Windows Vista and Windows 7, Windows Server 2008's Server Manager built-in Disk Management also has the ability to resize partitions, which means you can shrink a partition and extend another partition by adding the free space. So whenever you want to increase partition size or extend C drive in Windows Server 2008, just try this free utility as your first choice. 

Disk Management of Windows Server:

Windows Server 2008 Disk Management

Disk Management of Windows 7/8/10:

extend windows 7

1. To extend C drive, just open Disk Management, right click on C drive and select "Extend Volume" option.

2. The Extend Volume window will pop up and then specify the amount of space you want to extend. The steps can be also used to increase any other partitions.   

Please note that "Extend Volume" option will be available only if there is unallocated space behind the partition which you want to extend.

If there is no unallocated space next to the partition you want to extend, how to increase the partition size? Here, a third party server partition software is required.

Extend c drive volume on Windows with extending partition software

If you cannot increase partition size or extend C drive on Windows Server 2008, you can try to do this job using EaseUS Partition Master Server Edition, a popular and easy-to-use server partition software.

EaseUS Partition Master Enterprise


Your trustworthy Windows Server disk manager.

Extend System drive, combine/split partitions.
Clone disk, migrate OS to HDD/SSD.
Convert MBR to GPT, GPT to MBR, no data loss.
1-click adjust disk layout, create volumes at one time.

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You don't need to move unallocated space’s location with EaseUS Partition Master, which allows you to skip step of moving unallocated space.

It can perform basic and advanced partition operations on your Server without data loss, including: resize and move partitions, copy partition, copy disk, copy dynamic volume, convert partition, split partition, merge partitions, etc. Moreover, EaseUS Partition Master can extend NTFS partition without reboot. All hardware RAID supported.

Steps to extend C drive size on Windows Server 2008

It is important to back up the server before resizing the server partition with professional server backup software because nothing is 100% secure.

Step 1. Locate the Target Partition.

Go to Partition Manager, locate the target partition and select "Resize/Move".

Select target partition to extend

Step 2. Extend the Target Partition.

Drag the partition panel rightward or leftward to add the unallocated space into your current partition and click "OK" to confirm.

choose another drive to allocate space

Extra Option: Get Space from Another Drive

If there is not enough unallocated space on your disk, right-click on a big partition with enough free space, select "Allocate space".

Then select the target partition that you want to extend at the allocate space to column.

choose another drive to allocate space

Step 3. Execute Operations to Extend Partition.

Drag the dots of the target partition into the unallocated space and click "OK".

finish extending partition

Then Click the "Execute Task" button and click "Apply" to keep all the changes. 

After EaseUS Partition Master executes the operations, you will have the bigger system C drive on Windows Server 2008.

You can also refer to this video tutorial to extend your C drive on Windows Server 2008.

Besides increasing system drive, EaseUS Partition Master provides Partition Recovery Wizard and Disk and Partition Copy Wizard features. It is a complete solution to solve your disk and partition problem.

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About the Author

Updated by Daisy

Daisy is the Senior editor of the writing team for EaseUS. She has been working at EaseUS for over ten years, starting as a technical writer and moving on to being a team leader of the content group. As a professional author for over ten years, she writes a lot to help people overcome their tech troubles.

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Written by Tracy King

Tracy became a member of the EaseUS content team in 2013. Being a technical writer for over 10 years, she is enthusiastic about sharing tips to assist readers in resolving complex issues in disk management, file transfer, PC & Mac performance optimization, etc., like an expert.

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  • I love that the changes you make with EaseUS Partition Master Free aren't immediately applied to the disks. It makes it way easier to play out what will happen after you've made all the changes. I also think the overall look and feel of EaseUS Partition Master Free makes whatever you're doing with your computer's partitions easy.

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  • Partition Master Free can Resize, Move, Merge, Migrate, and Copy disks or partitions; convert to local, change label, defragment, check and explore partition; and much more. A premium upgrade adds free tech support and the ability to resize dynamic volumes.

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  • It won't hot image your drives or align them, but since it's coupled with a partition manager, it allows you do perform many tasks at once, instead of just cloning drives. You can move partitions around, resize them, defragment, and more, along with the other tools you'd expect from a cloning tool.

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