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extend Windows 7 system partition

How do you usually extend Windows 7 system partition? To ensure that the system partition extending is flexible and safe, it is better for our users to get help from professional disk partition manager. And, this post of MiniTool tells you what to do.

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Most computer users, I believe, are not likely to perform operations on system partition, because system partition stores boot files of the operating system. Once these important files are damaged by inappropriate operations, the OS may get corrupt and even leading to serious data loss, which I believe is a situation that nobody wants to encounter.

However, we have to resize system partition sometimes, such as to cope with low disk space issue, or to shrink system partition size as it is taking too much disk space. Today what I am going to talk about is how to extend Windows 7 system partition, to help users who are unable to increase C drive in Windows 7 using Disk Management.

Extend C Drive Windows 7 Greyed out

Users who are familiar with Windows built-in Disk Management tool know that Disk Management enables them to resize partition since Windows 7, and the corresponding features are Extend Volume and Shrink Volume.

To access Disk Management, we should follow these steps:

  1. Right-click My Computer -> press Management -> press Disk Management.
  2. OR press Win + R keys -> input diskmgmt.msc -> click OK or hit Enter key.

Then we can right-click on a partition and the new features will appear. (image attached)

Disk Management extend partition feature

The above picture shows that extend Windows 7 system partition is possible by using this Disk Management tool.  In this case, we just follow the prompt and extend C drive in Windows 7. But most of the time we may find Extend Volume is greyed out as showing below.

Disk Management extend partition feature greyed out

The reason?

Well, in one of the following situations, Extend Volume will grey out:

  1. There is no unallocated space following the target primary partition.
  2. There is no free space following the target logical partition.
  3. The target partition is not in RAW or NTFS file system.

If no unallocated space are available to use, I think users will have to delete a primary partition that immediately follows the system partition to increase C drive in Windows 7. And data backup should be given priority.

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Well then, is there a way to extend system partition in Windows 7 without affecting data? Actually, we can seek for better solutions. For example, the third party partition magic is a good choice. As system partition requires extremely high demands for security, I recommend MiniTool Partition Wizard - professional partition magic with excellent data protection.

Partition Wizard Is the Best Choice to Extend Windows 7 System Partition

MiniTool Partition Wizard can deal with all situations to extend Windows 7 system partition, no matter there is unallocated space following the system partition or not. Besides, any changes on system partition require reboot to ensure the data security. Next, I will show you how this free partition magic helps to increase C drive in Windows 7.

Before you do: It is also recommended to use the bootable media of MiniTool Partition Wizard to perform any system-related operations in case of any accident that may lead to boot failure. To create a bootable media, get Partition Wizard Pro first.

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Tip: Partition Wizard regards both unallocated space and free space as unallocated space. Thus, even the C drive in Windows 7 is followed by free space in Disk Management, Partition Wizard can make the extending.

Situation 1: there is unallocated space following Windows 7 system partition

Step 1: Click on the C drive and select "Move/Resize Partition" from the operations menu.

Step 2: Drag the triangle rightwards to occupy the unallocated space (13.3 GB in my case) in the new window. Then click "OK" button to go back to the main interface.

Step 3: You can preview the change on C drive. Then press "Apply" to extend Windows 7 system partition.

Partition Wiazrd resize partition feature

Hot Article: read and learn how to resize Windows 8 boot partition.

Situation 2: there is no unallocated space or the unallocated space is not following the C drive

Step 1: Click on the C drive and select "Extend Partition" from the operations menu.

Step 2: Drop down the box to select which partition or unallocated space to take some free space from. Then drag the slider leftwards or rightwards to determine how much free space you want. After these operations, click "OK" to return to the main interface.

Step 3: Press "Apply" to extend C drive Windows 7.

Partition Wizard extend partition feature

What's Your Opinion?

From the above demonstration, we can see MiniTool Partition Wizard Free Edition, the powerful and professional partition magic, can help us create conditions to extend Windows 7 system partition and then finish C drive extending flexibly and safely. If you want to extend Windows 7 system partition and find Extend Volume in Disk Management is greyed out, you can download this partition magic and try it.

Extend Windows 7 System Partition FAQ

How do I extend a partition in Windows 7?
Without third party tool you can extend a partition in Windows 7 only when there is unallocated space following a primary partition or free space following the logical partition. To take free space from faraway partitions, MiniTool Partition Wizard Free which offers Move/Resize/Extend Partition features is a good choice.
How do I increase my system partition?
Usually, using Windows built-in disk management tool helps avoid system restart but this requires some unallocated space following the system primary partition. If no unallocated spaced is there, you may using MiniTool Partition Wizard Pro which is able to take free space from the rest partition on the system disk.
How can I extend my C drive memory in Windows 7?
  1. Create a bootable media using MiniTool Partition Wizard Pro.
  2. Boot your computer using the bootable media.
  3. When get the main interface, follow this guide to extend C drive Windows 7.
  4. Remove the bootable media and boot Windows 7.
How do I allocate more space to C drive?
In Windows Disk Management tool, use Extend Volume function if there is some unallocated space following the C drive; With third-party software, you are able to allocate more space to C drive regardless of whether there is any unallocated space following the C drive. The rest partitions can offer free space to extend C drive also. Check tutorial here. 
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