Forum Discussion
How to Increase C Drive Space in Windows 11 without Formatting
Due to previous mistake. I only allocated 80GB storage for Windows OS. Now, there is only 10GB free space left in my C drive as Windows 11 eats up more space than Windows 10. In fact, there is a plenty of free space available in D drive (nearly 100GB). Is there any to how to increase c drive space in windows 11 without formatting the drive?
I don't want to reinstall Windows 11 as it is really a time consuming task. Kindly share your experience if you knew how to add more space to C drive in Windows 11 without formatting.
P.S. there is no option to extend C drive in Windows 11 when opening the Disk Management app.
I totally get it, I made the same mistake myself once! I used a free tool called Dr.Partition to easily drag and resize my partitions without losing any data on my D drive. It was way easier than I expected and saved me from a full Windows reinstall.
Check this: https://www.wintechhow.com/add-more-space-to-c-drive
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I had the exact same problem when I upgraded to Windows 11 — only gave C: 80GB and it filled up super quick. Disk Management wouldn’t let me extend it because the free space was locked behind D:.
What I did was shrink D: by about 50GB, then used a partition tool (I used Dr.Partition) to move D: to the right, so the unallocated space sat right next to C:. After that, the “Extend Volume” option finally lit up, and I could just add the space to C:.
No reinstall, no formatting — took maybe half an hour with a reboot. Now my C: has plenty of breathing room and Windows runs smoother.
Well, the so called solution costs money. Bad solution imho.
- Absolutely, let's dive into the do's and don'ts when you're trying to increase your C drive space in Windows 11 without formatting. Always back up your important files before messing around with partitions. When you're cleaning up before or after resizing, don't just delete everything you see. Check what you're deleting! Some system files are essential for Windows to run smoothly. I've seen people mistakenly delete files that they thought were junk, only to find their system acting all kinds of wonky later.
- Yes. You can easily increase c drive space in Windows 11 with the help of Disk Management app. Make sure you log in as the root administrator. A normal user won't have the privilege to perform such a high-level task in Windows 11. This is the official way to add more space to C drive from Windows 11.
Hi Ishaain Unfortunately, for a long time, even in Windows 10, such a step has not been possible!
