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How to Transfer Space from One Drive to Another in Windows 11/10/8/7

This article provides two effective ways on how to transfer space from one drive to another in Windows 11/10. You can use the allocate space function to move free space from one partition to another. If your partitions are on different disks, you can also run EaseUS partition software and move space from one partition to another even they are on different disks.

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Updated by Cici on Nov 09, 2023
Written by Brithny

When you are trying to store a large amount of data on your computer or laptop, you may find the partition is in low disk space. However, there are lots of free space on other partitions, so you may wonder if it is possible to transfer space from one drive to another so as to enlarge the partition space in Windows 11/10/8/7. 

For example, transfer free space to E drive, or transfer free space from F drive (on disk 1) to D drive (on disk 0). We indeed could help! Follow the two parts below to move free space from one partition to another now.

Part 1. How to Move Free Space from One Partition to Another (The Two Partitions are on the Same Disk)

If the two partitions are on the same disk, it would be a piece of cake to move free space from one partition to another. For example, if you want to transfer D drive's free space to C drive, or move any partition's free space to another drive, you can follow these simple steps to make it.

All you need is EaseUS Partition Master. It provides a feature called Allocate Space, which can help allocate the unused space of the selected partition to another partition on the same disk.

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After downloading the EaseUS disk management tool, follow the steps to allocate free space to another drive. Here, I take D drive and C drive as an example.

Step 1. Right-click on the D: partition with enough free space and select "Allocate Space".

Select partition to allocate space

Step 2. Select the target partition - C: drive and drag the partition panel rightward to add the free space from D: drive to C: drive. Then click "OK" to confirm.

Allocate space to extend partition

Step 3. Click the "Execute Task" button and click "Apply" to start the process of moving free space from D: drive to C: drive.

finish extending partition

If you have unallocated space on your disk, you can move unallocated space to the wanted hard drive by resizing hard drive partitions with EaseUS Partition Master.

Part 2. How to Transfer Space from One Drive to Another (The Two Partitions are Not on the Same Disk)

What if the two partitions are on different disks? For instance, the free space is on disk 0 while the E drive or D drive is on Disk 1. So, here comes the second part. To transfer or move free space or unallocated space to the other partition (on a different disk), you must convert your basic disks into the dynamic disk and then move the free space. To make it, you'll need to download EaseUS partition manager software.

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Then, follow these steps below to move space to another partition even they are on different hard disks.

EaseUS Partition Master does not support cross-disk expansion for C drive, system partition, and boot partition. Only data partitions are allowed for cross-disk expansion.

Step 1. Convert Basic into Dynamic

  • Click "Disk Converter" and select "Convert Basic to Dynamic". Click "Convert" to continue.
choose the first disk and convert to dynamic
  • Confirm the disk conversion from the Basic to Dynamic.
merge disk 0 and disk - 2
  • Select the other disk (with at least 1M free space at the end of the disk) and convert it to a dynamic disk in the same way.
convert the second disk into dynamic
  • When both of the disks have been converted into dynamic disks, as shown below, you can follow Step 2 to merge free space from one disk to another now.
convert the second disk into dynamic

Step 2. Merge Two Disks into One Disk

Note: The other dynamic must be unallocated space. If it's not, use EaseUS Partition Master to delete all the partitions on it. What's more, you cannot merge a system partition even if you have converted it to dynamic.

  • Select the full disk, right-click on it and choose "Resize/Move".
choose the disk and resize
  • Use your mouse to drag the partition panel rightward or leftward to extend partition size.

Sometimes, the unallocated space is on the left of the partition you want to extend. If you want to move unallocated space, just drag the left partition handle leftwards to the size you want.

resize the disk
  • Click "Execute 1 Task(s)" and "Apply".
merge two disks space into one

To Sum Up This Post

You have learned at least two ways to transfer space from one partition to another in Windows 11,10, 8.1, 8, 7 with trustworthy steps. If you have unallocated space on your hard drive, you can turn to the Resize/Move feature in EaseUS Partition Master.

If you like this powerful tool and it helps you to move space from one partition to another, you can click the buttons below to share this article with more people online.

FAQs - How to Move Space from One Partition to Another

Here are some hot topics and answers. If you still have questions, you can read on and get additional help.

What is unallocated space and free space?

Unallocated space means space on a hard drive that potentially contains intact files, remnants of data, or temporary files that were created and then deleted. It is the space on a hard drive or other devices that haven't been partitioned. You can extend a partition with the EaseUS partition tool if there is an unallocated space on the drive.

Free space is the vacuum of the existing partition. For example, your D drive has 200GB space, and you have used 150GB. The 50GB is the free space of the D drive.

How do I transfer space from D to C in Windows 11/10?

  1. 1. Download EaseUS Partition Master
  2. 2. Right-click on the D partition and select "Allocate Space" to allocate the free space.
  3. 3. Select the C drive. Drag the partition panel rightward to add space allocated from the source partition to the target one. Then click "OK" to confirm.
  4. 4. Click the "Execute Operation" button and click "Apply".

Is it possible to transfer free storage space from one hard drive to another?

Yes, it is. You can transfer free storage space from one hard drive to another if you have turned these hard drives into dynamic disks.

Why my C drive is automatically filling up?

This can be caused due to malware, bloated WinSxS folder, Hibernation settings, System Corruption, System Restore, Temporary Files, other Hidden files, etc. You can free up C drive space and increase C drive space to fix it.

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About the Author

Updated by Cici

Cici is the junior editor of the writing team of EaseUS. She accepted the systematic training on computers at EaseUS for over one year. Now, she wrote a lot of professional articles to help people resolve the issues of hard drive corruption, computer boot errors, and disk partition problems.

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Written by Brithny

Brithny is a technology enthusiast, aiming to make readers' tech lives easy and enjoyable. She loves exploring new technologies and writing technical how-to tips. In her spare time, she loves sharing things about her game experience on Facebook or Twitter.

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  • I love that the changes you make with EaseUS Partition Master Free aren't immediately applied to the disks. It makes it way easier to play out what will happen after you've made all the changes. I also think the overall look and feel of EaseUS Partition Master Free makes whatever you're doing with your computer's partitions easy.

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  • It won't hot image your drives or align them, but since it's coupled with a partition manager, it allows you do perform many tasks at once, instead of just cloning drives. You can move partitions around, resize them, defragment, and more, along with the other tools you'd expect from a cloning tool.

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