Increase C drive space

Increase C drive space on Windows 7

When system C: drive is getting full in Windows 7, you can increase C drive free space without reinstalling Windows or backing up and restoring. However, it is not an easy task to many computer users. Search by Google or in technical forums, many people ask the similar questions, for example: is it safe to decrease and increase partition size, will it cause data loss? Which is the right tool and what is the right way? In this article, I’ll show you how to increase C drive space in Windows 7 (32 and 64 bit) without losing data.

Increase C drive space

Windows 7 built-in Extend Volume

Windows has native Disk Management component which can create, delete, format and set Active partition. To enhance the ability, Microsoft added new features in Windows 7 DM. Shrink Volume and Extend Volume functionality can decrease and increase size of partitioned drives on the fly. However, both functionalities are restricted.

In most of the Windows 7 laptop and desktop, both C and D drive are in the same hard disk, so many people try to decrease D and increase C drive with these new features. But in fact, it is impossible. After shrinking D, Unallocated space is generated on the right side, but to extend C drive, Unallocated space must be on the left side of D.

The only option to increase C: drive disk space is by deleting D to get adjacent Unallocated space behind C drive. There will be a big issue if you do like this: all installed programs and part of Windows services in drive D will be deleted. So the best way to increase C drive space in Windows 7 is running professional partition software.

Increase C drive space by software

Windows built-in Disk Management has many limitations but it is safe in most conditions. There are many disk partition software in the market, but few are safe enough. Many people feedback that some so-called safe partition software killed their system and/or data. It’s terrible! You can reinstall Windows and programs if there is no other way, but what to do If you lost your family photos and work documents?

It costs such a long time to restore everything even if you have backup, furthermore, many personal backup software are not protecting in real time, so it is very important to select real safe partitioning software.

To eradicate system damage and data loss risk, NIUBI Partition Editor brings innovative 1 Second Rollback technology to ensure system and data intact. It creates snapshot of disk drive after starting, detects software internal error and hardware issue. If anything goes wrong, it rolls back to original snapshot automatically and rapidly, so nothing will be changed or damaged.

To decrease and increase partition size with NIUBI, you just need to drag and drop on the disk map. Any existing Unallocated space and free space inside of other drives in the same disk can be used to increase C drive free space.

Increase C drive with Unallocated space

If you deleted a data volume or shrank the adjacent drive D in Windows 7 Disk Management, there will be Unallocated space. As I said above, many people shrank D but failed to expand C drive. In this situation, NIUBI Partition Editor can move Unallocated space to the left side of drive D and then add into C drive.

Download NIUBI Partition Editor, as you see, there is an 20GB Unallocated space that is shrank from drive D in my Windows 7 laptop.

NIUBI Professional

Step 1: Right click drive D and select Resize/Move Volume, drag the middle position rightwards in the pop-up window.

Move partition D

Unallocated space is moved to the left side of drive D. (There is adjacent Unallocated space on the right side, so Extend Volume is enabled for C drive in Disk Management.)

Partition D moved

Step 2:¬†Right click C drive and select “Resize/Move Volume” again, drag the right border rightwards in the pop-up window to combine the Unallocated space.

Extend C drive

C drive space is increased to 50GB.

Merge Unallocated to C

Extend C drive with free unused space

What to do if there is no such Unallocated space? Actually, it is easier if there is plenty of free space in drive D. With NIUBI Partition Editor, you can decrease D and increase C drive size without moving partition.

Partition Editor

Right click drive D and select Resize/Move Volume, drag the left border rightwards in the pop-up window.

Decrease D

Unallocated space is generated on the left side of D, which can be added into C drive directly.

Unallocated produced

The same with Step 2 above, you just need to right click C drive and combine the Unallocated space with Resize/Move Volume feature.

In Summary

Because of the inherent limitations, Disk Management is not the best tool. To decrease data volume and increase C drive space in Windows 7, you need professional and safe partitioning software. Because of the data protection and fast resizing ability, NIUBI Partition Editor can accomplish this task well. Besides changing partition size, it helps do many other disk partition management operations.

Download to try

How to increase c drive space in windows 7 without data loss?
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