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How to Expand or Extend Windows 7/8 Partition without Data Loss

Updated on Nov 29, 2018 by Jean to Partition Master

How to expand or extend Windows partition without data loss? EaseUS partition manager software enables you to increase partition size easily and safely in Windows 10/8/7/xp/vista.

Can You Expand a Partition in Windows 7

Windows 7, announcing to make your PC simpler and things you do every day easier, has come to us now. True, many Windows fans have rushed to use and test it before it releases officially and give a thumb up to its good performance and advanced features.

However, there are still some different voices, like "Windows 7 won't let me expand partition", "boot errors after expanding the Windows 7 partition". How to expand or extend partition in Windows 7/8 or even Windows 10, especially when to expand the system partition is needed?"

Method 1. Use Disk Management to Extend Windows 7 Partition


  1. Please note that there must be unallocated space behind the partition which you want to expand with Windows built-in Disk Management utility.
  2. Otherwise, you might find that the Extend Volume option is greyed out and not available.  


At this moment, you have two choices to solve this problem: shrink a partition and then extend the target partition with Disk Mangement tool or apply third-party partition manager software for help.

See the detail steps to see how can you expand your partition size with Disk Management in Windows 7 now:

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

2. Select the adjacent disk of the disk you want to extend, right click and choose Shrink Volume to create some free disk space.

3. Select the disk you want to extend, right click and choose Extend Volume to expand the partition.

extend windows 7 partition

4. Set and add more size to your target partition and click Next to continue. 

Follow the onscreen guidelines to complete the process.

Extend Windows 7 partition with Disk Managenent.

Method 2. To Expand/Extend Windows 7 Partition with EaseUS Partition Software

When Disk Management in Windows 7 cannot manage your partition as your desire,  or if you know little about Windows, an easier and safer alternative solution - EaseUS free partition software will be a nice choice to expand partitions in Windows 7. Here is the step-by-step guide.

EaseUS Partition Master, as a comprehensive hard disk partition tool, also works as system optimization software for Windows-based administration, not only enabling you to increase Windows 7/Windows 8 partition size without data loss, extending system partition without reboot can also be done on your own.

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 Windows 10 is supported


Step 1: Launch EaseUS Partition Master

Run partition manager software

Step 2: Free up space to extend partition

If the hard drive has enough unallocated space to extend the target partition, jump to Step 3 and continue.

If not, free up space first:
1. Right-click on a partition next to the target partition and select "Resize/Move".
2. Drag the partition ends to free up space, leaving enough unallocated space behind the target partition, click "OK".

Free up space to extend partition

Step 3: Extend partition

1. Right-click on the target partition and select "Resize/Move".

Resize target partition

2. Drag the target partition handle into the unallocated space to extend partition.

Add space to the target partition

Step 4: Keep all changes

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

Keep all changes for extending partition


If you extend the Windows system C drive in Windows 7 or Windows 8/10 by following the above four steps with EaseUS Partition Master, and the program asks you to restart your PC.

Please do as the software required. All changes will be kept into the system and you'll get a bigger C drive after rebooting.