Change partition size Win7

Change partition size on Windows 7

After running your Windows 7 laptop or desktop for a period of time, you need to change the size of partitioned drives. For example, the system C drive is running out of space, so you need to increase C drive space. You can decrease a large drive to produce Unallocated space if you want to create more disk partitions.

Whereas, you can combine 2 small or similar data drives. With right disk partition software, you can accomplish these tasks without reinstalling Windows or losing data. In this article, I’ll show you how to change partition size on Windows 7 (32 & 64 bit).

Change partition size Win7

Decrease Windows 7 partition size

To change partition size in Windows 7, there are two options: Windows native Disk Management and third party partition software. Disk Management is safe in most situations, but it has many restrictions. 3rd-party partition software is much more powerful, but you should use the reliable and safe one, otherwise, there is potential data loss risk.

Windows 7 Disk Management has the built-in Shrink Volume functionality to decrease partition size, however, it can only shrink NTFS partition. In addition, it can only produce Unallocated space on the right side of the drive that you are shrinking.

Comparing with Disk Management, NIUBI Partition Editor supports both NTFS and FAT32 partitions, it can generate Unallocated space on either side. To change partition size on Windows 7, you just need to drag and drop on the disk map of NIUBI.

How to decrease partition size with NIUBI:

Download NIUBI Partition Editor, you’ll see all disk partitions on the right and available operations on the left. In my Windows 7 laptop, there is drive C, D, E, F plus a system reserved partition in Disk 0. Drive D is 50GB and I’ll show you how to shrink it.

NIUBI Partition Editor

Right click D and select Resize/Move Volume, drag either border towards the other side in the pop-up window. If you drag right border leftwards:

Drag leftwards

Unallocated space is produced on the right side of drive D.

Drive D shrank

If you drag the left border rightwards:

Decrease D

Unallocated space is produced on the left side of drive D.

Drive D decrease

Increase Windows 7 partition size

Windows 7 Disk Management has built-in Extend Volume functionality to increase partition size, but as I said above, Shrink Volume can only generate Unallocated space on the right side when you shrinking drive D. To increase C drive space with Extend Volume, there must be Unallocated space on the right side of C drive, that means, you cannot extend C drive by shrinking D. Furthermore, the same with Shrink Volume, Extend Volume only supports NTFS partition.

NIUBI Partition Editor can generate Unallocated space on either side, so you can combine Unallocated space to expand C drive easily.

Right click drive C and select Resize/Move Volume, drag the right border rightwards to combine the Unallocated space in the pop-up window:

Extend C drive

C drive size increased to 50GB.

C drive increased

Merge Windows 7 partitions

If you want to combine 2 similar drives into a larger one, NIUBI can help you easily, too.

For example, right click either drive E or F and select Merge Volume.

Merge volume

In the pop-up window, click the check-box in front of both E and F, and then click the drop-down box on the bottom to select the destination drive.

Select drives

Click OK and back to the main window, drive F is merged into E. All files in drive F will be moved to a new folder in drive E automatically.

Drives merged

Tips:

  • The operations you do will be listed as pending on bottom left, you can click Undo on top left to cancel, or click Apply to confirm and execute.
  • The pending operations with  can be done in Windows without interruption.

In Summary

To change partition size in Windows 7, the built-in Disk Management only works in limited situation. In most cases, you still need third party professional partition software. Better than other tools, NIUBI Partition Editor is integrated with innovative 1 Second Rollback technology to ensure system and data intact. You just need to click, drag and drop on the disk map to change size of partitioned drives.

Download to try

How to change partition size on windows 7 without data loss?
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