EaseUS Partition Master

A simple partition tool to manage disk space in Windows 10

How to Reallocate Disk Space Without Losing Data in Windows 10/8/7

Brithny updated on Dec 11, 2020 Partition Manager | How-to Articles

"I have 2TB of storage divided into two drives, C and D. I continue to get messages that I'm running out of disk space on drive C (currently allocated at 118 GB), so I tried to shrink drive D (with 1.4 TB of available space) to expand drive C. The process of shrinking drive D worked. But when I went to reallocate the freed space to expand drive C, the "expand" command was shadowed out, and I was unable to expand drive C. Am I missing something in the mechanics of reallocating space? Has anyone experienced a similar problem and, if so, can you share how this can be facilitated?"

The Best Software to Reallocated Space Without Formatting

In most cases, you may want to reallocate disk space because there is not enough free space on your system partition in Windows 10. This problem often happens if you have lots of data on your C drive, while there's lots of free space on other drives like D drive or E drive. The question is how to change partition size without unallocated space or without losing data. To make it, you need EaseUS Partition Master

Your Reliable Choice - EaseUS Partition Master

The software enables you to reallocate disk space in Windows 10/8/7 with the "Adjust Disk Layout" function. This feature is used for adjusting the partition size on your disk with one step. You do not need to consider the partition layout and adjust the border of the partition to change it to the desired size.

Part 1. How to Reallocate Disk Space in Windows 10/8/7

Download the best disk management tool. Then, follow the steps below to adjust your disk space with EaseUS Partition Master.

Step 1. Run EaseUS Partition Master.

On the main screen, right-click the disk and select "Adjust Disk Layout".

How to adjust disk layout step 1

Step 2. Select the drive or partition.

You can reallocate the space by dragging dots of its head or tail. Then, click "Proceed".

How to adjust disk layout step 2

Step 3. Execute operations to adjust partition size.

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

How to adjust disk layout step 3

Part 2. How to Reallocate C Drive Space in Windows 10/8/7

If your C drive or other drives get the low disk space warning, you will get the low disk space alert on our product. You can reallocate or adjust the C drive space with EaseUS partition manager. Here are the steps to adjust C drive space without losing data:

Step 1. Launch EaseUS Partition Master and click "Adjust with 1-Click."

When your C drive is out of space, you will see the Low Disk Space alert on our product.

How to Adjust Low C Drive Space Step 1

Step 2. Click "Proceed" to adjust space automatically.

EaseUS Partition Master will automatically adjust your C drive to solve the low space issue. Click "Proceed" to continue.

How to Adjust Low C Drive Space Step 2

You can also click "Manual Adjustment" to extend the C drive manually if the Smart Space Adjustment cannot meet your needs.

When turning to Manual Adjustment, the result of smart adjustment will be retained as the starting point for manual adjustment. Select the C drive, and drag dots to add more space to C drive. Then click "Proceed" to continue.

Manually Adjust Low C Drive Space

Step 3. Execute operations.

Click the "Execute Operation" button at the top corner and start all pending operations by clicking "Apply".

How to Adjust Low C Drive Space Step 3


That's all about the way to reallocate disk space from one drive to another one in Windows 10/8/7. In addition to partitioning a hard disk flexibly, EaseUS Partition Master also allows you to migrate OS to another drive, resize or move partition space, and allocate unallocated space, and more.

Reallocated Space Without Deleting or Formatting FAQs

If you have related questions, you can read on. You may get additional help here.

Can I reallocate space on the hard drive?

You can open Windows 10 Disk Management to redistribute disk space. With this method, you need to delete or move a partition. 

You can also run EaseUS Partition Master. It allows you to add free space from another partition on the same hard disk to the system partition, which runs on low disk space.

How do I fix low disk space?

Step 1. Open EaseUS Partition Master and click "Adjust with 1-Click" on the right panel.

Step 2. EaseUS Partition Master will adjust the partition size to solve the low space issue intelligently after clicking "Adjust with 1-click", and you only need to click "Proceed" to continue.  

Step 3. Click the "Execute Operation" button at the top corner and keep all changes by clicking "Apply".

Why does my computer keep saying I have low disk space?

If you're getting a Low Disk Space error because of a full Temp folder. If you used Disk Cleanup to free up space on your device and then see a Low Disk Space error, your Temp folder may be quickly filling up with application files used by Microsoft Store.

Why is C drive full Windows 10?

Generally speaking, your hard drive's disk space is not enough to store a large amount of data. Additionally, if you are only bothered by the C drive full issue, there are likely too many applications or files saved.

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All-round disk & partition management software for personal and commercial use. Let it manage your storage drive: resize, format, delete, clone, convert, etc.

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