EaseUS Partition Master

A simple partition tool to manage disk space in Windows 10

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

Updated by Roxanne on Aug 30, 2021
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 AnotherThe 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 magic software. 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 Operation" 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 AnotherThe 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

  • Right-click one of the disks (disk 0, disk 1 or disk 2) that you want to merge, choose "Convert to Dynamic".
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 lots of free space) 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 you have converted 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 Operation" and you are able to merge space from one disk to the other.
merge two disks space into one

ConclusionTo 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.

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FAQsHow 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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Updated by Roxanne

Roxanne is one of the main contributors to EaseUS and has created multiple posts on digital devices like PCs, Mobile phones, tablets, Mac, etc. She loves to share ideas with people of the same interest.

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Written by Brithny

Brithny is a technology enthusiast, aiming to make readers' tech life easy and enjoyable. She loves exploring new technologies and writing technical how-to tips. On her spare time, she loves sharing things about her favorite singer - Taylor Swift on her 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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  • Partition Master Free can Resize, Move, Merge, Migrate, and Copy disks or partitions; convert to local, change label, defragment, check and explore partition; and much more. A premium upgrade adds free tech support and the ability to resize dynamic volumes.

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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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