How To Increase C Drive Capacity (Windows 10, 8, 7)

By nagib

PUBLISHED 3:23 pm GMT+0700 Sun April 2021

When buying a new laptop, we often find that the hard disk inside has been divided into two partitions, namely C drive and D drive. Usually C drive, is the location for installing the operating system and programs, is smaller than D drive where data is stored.

Such division of hard disk partitions is very common, because logically the C drive is only used as a place to install OS and programs, so it doesn’t need to be too big.

But the problem is, the size given is sometimes too small. There is even a friend of mine who bought a new laptop with a C drive size of only 46 GB, while the total hard disk on the laptop is 1 TB. So stingy.

Maybe the laptop manufacturer forgot that currently the average application size is getting bigger because it has to keep up with the development of graphical displays and UI. Not to mention for those who like to play games or download fat files or YouTube movies, it is guaranteed that the size of the C drive that is too small will be full soon!

To answer these concerns, I will share how to easily and safely increase the capacity of the C drive partition. Even though it seems trivial, many friends are still afraid to do it. Fear of being wrong then the data will be lost. Because of that I will show you how to step by step to completion.

1. Install the partition manager application (partition manager)

In order to increase the size of the C drive partition in both Windows 10, 8 and 7, we need the help of a partition manager application. The application that I recommend is AOMEI Partition Assistant.

Download AOMEI Partition.

Just download and install it on your laptop or PC then follow the next steps.

2. Open the AOMEI Partition Assistant application

Once installed, run the application. Wait for the application to finish scanning all the partitions on our hard disk.

3. Note the position of the hard disk partition and determine which part can be moved to C drive.

In this tutorial I demonstrated two partitions named C drive and D drive.

Between these two partitions there is no free hard disk space (unallocated) so to increase the size of C drive, the D drive partition must be shifted forward.

AOMEI Parttition

4. Slide drive D forward so that there is unallocated space that can be used to add C drive

Because we will increase the capacity of the C drive partition, there must be unallocated space at the base of Drive D. So the first step we have to do is move the Drive D partition to the front.

The trick is to click once on Drive D then select the Resize / Move Partition menu.

AOMEI Partition To Increase Drive C Size

After that a window will appear to resize and move partitions on Drive D.

Drag the size divider forward to move the D Drive partition to the front, while reducing its size so that a new unallocated space will be created at the base of the partition.

Look at the following picture to make it easier to understand:

Increase Drive C Size Partition AOME

If you have clicked OK. Then click the Apply button in the upper left corner.


Then the application will carry out the process of moving and resizing partitions. Maybe the process can take several minutes depending on the capacity of the hard disk we have. The bigger it is, the longer it will take.

5. Resize C drive to increase capacity

After the process is complete, we will see that there is unallocated space in front of C drive. This free space is what we will use to increase the capacity of the C drive partition.

Increase Drive C Size

To increase the size of the C Drive partition, we must combine it with the unallocated space.

The trick is to click on C drive > select the Resize / Move Partition menu.

Resize Drive C Size

Next we will increase the size of C drive > drag the size divider until it is stuck to the end> ​​Click OK> Apply

Increase Drive C Size AOMEI Partition

Wait for the process to complete.

After the process is complete, we will find that the size of C drive has increased to the size of the unallocated space we created earlier. At this point we have managed to increase the size of our C Drive. Easy right?

There is nothing dangerous about messing with hard disk partitions as long as we know what we are doing. So friends, don’t be afraid anymore, if you have questions, you can send it via the comments column below this post.

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