[100% Working] How to Increase C Drive in Windows 10/8/7 without Formatting

Tracy King updated on Sep 17, 2020 to Partition Manager | How-to Articles

How to Increase C Drive Space Without Formatting in Windows 7

"Does anyone know how to increase C drive space in Windows 10 without formatting or deleting the second drive/partition? I have 150GB allotted to my C drive, but now it's almost full. If I can add more space to it, things will be perfect. But my problem is that I don't have free space on my computer anymore. All space has been divided into partitions. 

So I want to know whether I can still extend C drive partition without formatting or deleting the second partition or not? I have saved files and data on all the partitions on my computer. How can I move those unused free space from my drive D:, E: or even F: to my C: drive without deleting or formatting them?"

According to the Windows forum and the Google searching result, it seems that quite a lot of users are feeling reluctant to format or delete their second or third partition to free up space for extending system C drive. 

So if there is a guide on how to increase C drive space in Windows 7 without formatting or how to extend C drive space in Windows 10 without formatting or deleting in Windows 10/8/7, things will be perfect. Here in the below, we'll show you how to increase and extend C drive in Windows 10/8/7 without formatting.

How to Increase C Drive Space in Windows 10 Without Formatting

# 1. Download Partition Manager Software for Help

Disk Management and CMD command line all require to format and delete the partition so as to add space to the system C drive. If this is not what you want, don't worry. Professional partition manager software - EaseUS Partition Master will help.
It allows you to effortlessly extend C drive without deleting or formatting other partitions. You can even apply it to extend system reserved partition for Windows 10 update or fix other more partition problems. Just download this software, install it, and apply it with guidelines below to start extending your C drive now:

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 Windows 10 is supported

# 2. Extend, Increase C drive in Windows 10/8/7 without Formatting/Deleting Partition

Step 1. Locate the Target Partition

To start extending partition, you should first launch EaseUS Partition Master and locate the target partition which you would like to extend.

Step 2. Extend the Target Partition

1. Right-click on the target partition which you would like to extend and select "Resize/Move".

Select target partition to extend

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

choose another drive to allocate space

3. If there is no or not enough unallocated space on your disk, use the advanced partition resizing function to directly allocate free space from other partitions to the target drive without deleting or formatting.

Find the "Allocate XX space from" option, then click "Select partition". Choose the partition from which you want to allocate space. Drag the partition panel rightward or leftward to resize the partition you want to extend. Then click "OK" to confirm.

choose another drive to allocate space

Step 3. Execute Operations to Extend Partition

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

finish extending partition

After this, you can reboot your computer to keep all changes on your Windows 10, 8 or 7 PC. Now that, you've successfully increased C drive and gotten more free space added to your system drive.

How to Increase C Drive Space in Windows 10 Without Formatting FAQs

EaseUS Partition Master provides you with the easiest way to increase C drive space in Windows 7, Windows 8, and Windows 10 without formatting or deleting partitions. The following topics are highly relevant to how to extend C drive space in Windows 7/10, check them if you interested.

Can C Drive be extended?

You can increase C drive space by extending C drive and adding free disk space to system partition or moving free space from other partitions to C drive. Extending C drive space in Windows 7/8/10 is common operation and it does not cause data loss.

How can I increase C drive space in Windows 7?

How to extend C drive space in Windows 7 without formatting? Or how to increase C drive space in Windows 10? 

If there is unallocated space in your disk, you can extend C drive using the unallocated space. If there is no or not enough unallocated space on your disk, use the advanced partition resizing function of EaseUS Partition Master to directly allocate free space from other partitions to the target drive without deleting or formatting.

How do I allocate more space to C drive without formatting?

EaseUS comes two easy solutions for you to increase C drive space in Windows 7 or Windows 10 without formatting. And, with the advanced partition resizing feature, you can allocate free space from other drives to the C drive by drag and drop.

How do I increase the size of my C drive?

How can you extend C drive space without formatting or deleting? 

When there is unallocated space behind C drive, you can use Windows Disk Management utility to increase C drive space:

Step 1. Right-click My Computer and choose "Manage -> Storage -> Disk Management".

Step 2. Right-click on the partition that you want to extend, and choose "Extend Volume" to continue.

Step 3. Set and add more size to your target partition and click "Next" to continue.

Step 4. Click "Finish" to complete the process.

If there is no unallocated space or the unallocated space is not next to the C drive, to extend C drive without formatting or deleting, the professional partition manager - EaseUS Partition Master is your best choice.

With its "Resize/Move" partition functions, you can increase C drive space without data loss effortlessly. Whether the unallocated space is near to C drive, or whether there is unallocated space or not, it can help you extend C drive without formatting easily. 

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Frequently Asked Questions

Why Choose EaseUS Partition Master?

"I've used Partition Master Professional many times to create, delete, format, move, rename, and resize partitions."PCWorld

"Partitioning tools have come a very long since the days of complicated command line utilities and EASEUS Partition Master is one of the most advanced programs available."TECH ADVISOR

"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."Lifewire

Will the "Migrate OS" feature transfer the Windows system files only or the whole C drive?

To ensure that the migrated system will boot normally, the Migrate OS feature will transfer all the files in the system and the boot partitions. Generally, the boot partition is the C drive so the transfer will include all the files in C.

Does EaseUS Partition Master license apply to multiple computers?

The license of Partition Master Professional and Server editions can be used on 1 computer only, while that for for the Technician and Unlimited editions can be used on multiple machines.

What is the difference between EaseUS Partition Master Trial version and the Free version?

Free is for home users only, with most basic functions available such as partition resize and clone. While trial can help you understand how this product works and test what a full license can do on a business or server OS machine.

Will it cause any data loss after resizing the partition in EaseUS Partition Master?

Generally, it will not cause any data loss or boot issue by resizing a partition. However, in order to protect your data, we suggest that you backup the partition before resizing, in case of any unexpected situations such as power outages, computer hardware failures, etc. You can use EaseUS Todo Backup to backup the partition and its trial version is fully functioned for 30 days.

What should I prepare before resizing the partition?

On the partition that is going to be operated, there might be some files being occupied by other programs. To ensure a successful operation, we suggest that you close all the unnecessary software before resizing that partition. Otherwise, EaseUS Partition Master will detect the partition being locked by the other software and require a reboot to resize the partition under boot mode.

About EaseUS Partition Master

All-round disk & partition management software for personal and commercial use. Let it manage your storage drive: resize, format, delete, clone, convert, etc.

Video Tutorial

How to Partititon a Hard Drive on Windows 10/8/7