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Nowadays, computers have become an integral part of our lives and work. But the longer the computer works, the more we can perceive that the C drive indicates insufficient memory. When the C drive that is equivalent to the human heart, runs out of memory, countless operational problems will follow, such as computer crashes, card freezers, etc. These problems upset many users.
You might haven't downloaded anything; how will the space of drive C be getting smaller? Don't worry. We will explain why the C drive space is becoming smaller and smaller.
In addition to providing solutions for these causes, we'll also teach you how to move space from D drive to C drive on Windows 11/10/8/7 with a partition manager software -EaseUS Partition Master.
With this tool's help, you can transfer space from D drive to C drive directly without any data loss.
Why C Drive Is Getting Smaller
In general, the C drive is the system disk on a computer. When the Windows operating system runs, it will generate a lot of junk files. Whether you use it or not, the C drive space will become smaller to a certain extent, and you can even see C drive shows red bar. There are many reasons why the remaining space of C drive is becoming less and less. The following aspects are summarized for you:
1. Files in the recycle bin take up space. The more data stored temporarily in the recycle bin, the more space on the C drive will be taken up. You can delete the files in the recycle bin, then C drive space will increase accordingly. You can recover deleted files from emptied recycle bin if you remove them mistakenly.
2. Is system restore enabled on your computer? The system restore setting will reduce the C drive's space; you can disable it if not necessary.
3. Page files and virtual memory. The page file is relatively large. If the page file is stored in the C drive, it may make the computer's virtual memory reaches a certain limit. Therefore, you need to run the task manager at any time to see if the computer's memory is almost exhausted. If so, you should transfer the page files to another disk.
4. Too many temporary files. You can use the disk cleaning program that comes with the C drive system to clean up junk files because this will not delete the files that should not be removed by mistake. See how to solve there is not enough space on C drive.
5. Installing software to the C drive will definitely consume memory. Although sometimes you choose to install to other disks, the relevant registration files will be placed in the system folder, which will cause the capacity of the C drive to become smaller and smaller. So, install applications outside of C drive, such as to the D drive.
If you have tried the solutions mentioned above, but the C drive still doesn't have enough free space, your data disk, such as the D drive, has a lot of available space, then why not try to move the free space of D drive to C drive to extend?
If you are running Windows 11 and experiencing a C drive full issue, refer to this link How to Extend C Drive in Windows 11, or follow the provided methods below for help.
How to Move Space from D Drive to C Drive Windows 11/10/8/7
EaseUS Partition Master is one of the most well-known partition management programs, enabling all levels of users to easily partition hard drives on Windows computers and make full use of disk space.
Allocate Space from D Drive to C Drive Directly
You can use the new "Allocate Space" feature to increase C drive from D drive without deleting D drive to make unallocated space. No data loss at all.
Step 1. Right-click on the D: partition with enough free space and select "Allocate Space".
![Select partition to allocate space](/images/en/screenshot/partition-manager/screenshots/allocate-space-from-d-to-c-1.png)
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](/images/en/screenshot/partition-manager/screenshots/allocate-space-from-d-to-c-2.png)
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](/images/en/screenshot/partition-manager/screenshots/allocate-space-from-d-to-c-3.png)
Video Tutorial: Move and Resize Space in Windows 11/10
You can use it to resize/move partitions, merge partitions, create/format/delete partitions, migrate OS to SSD/HDD to speed up Windows, and more. Use this competent partition management program to move space from D drive to C drive or any other data drive to C in two approaches.
Do you think this passage is helpful to move space from D drive to C drive? If you like it, you can also share it with other people in need!
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About the Author
![](/images/en/icon/tracy.jpg)
Updated by Tracy King
Tracy became a member of the EaseUS content team in 2013. Being a technical writer for over 10 years, she is enthusiastic about sharing tips to assist readers in resolving complex issues in disk management, file transfer, PC & Mac performance optimization, etc., like an expert.
![](/images/en/icon/grantham.jpg)
Cedric Grantham is a senior editor and data recovery specialist of EaseUS. He mainly writes articles and how-to tips about data recovery on PC and Mac. He has handled 10,000+ data recovery cases and is good at data recovery of NTFS, FAT (FAT32 and ExFAT) file systems, and RAID structure reorganization.
Product Reviews
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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.
Read More -
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.
Read More
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