Many people feedback that there's not enough free space left in C drive after running the computer for a period of time. It is common issue on both personal computer and Windows server, because the OEM computer has a small c drive in factory settings. Even if you build the computer DIY, you won't create a very large partition for operating system, because it just occupy less than 20GB space even if installing the latest Windows 10. I've heard many times the Windows 10 users complain that "I have no free space left in my C drive".
It is annoying when there is not enough free space left in system partition C, because you cannot install Windows Updates, any more programs or upgrade to higher Windows version. Your computer may stuck, reboot expectedly or even crash. After reading this article, you'll know how to solve this problem with ease.
Firstly, you'd better clean up disk to reclaim space. In most of computers, there are many types of junk and unnecessary files. It won't do any damage to the system if you delete these files. After getting some free space, your computer will back to right status.
To reclaim disk space, Windows has built-in Disk Cleanup utility, which is able to remove most of common junk files safely. Follow the steps below:
If you did not get plenty of free space, you may try additional methods below:
You'd better add more space to C drive even if you got 10GB free space after cleaning up, because these space will be eaten up quickly by new generated junk files. That means, there will be no free space left in C drive again shortly.
In most of Windows computers, there's other partition(s) on the same disk, and there's free unused space in these data partitions. Then you can shrink these partitions to get Unallocated space, and then add into C drive. In this way, Operating System, programs and anything else keep the same with before.
Before starting, you'd better make a backup and run safe partitioning software. Better than other tools, NIUBI Partition Editor has Virtual Mode, 1-Second Rollback and Cancel-at-well technologies to protect system and data. It has free edition for Windows 10/8/7/Vista/XP home computer users.
Download NIUBI Partition Editor and follow the steps in the video to increase C drive space:
If you cannot get enough free space after cleaning up disk and shrinking from other partitions, you may clone the system disk to another larger one. Note: no software can add space to C drive from another separated hard disk.
If system C drive is full in a virtual machine, follow the steps above to clean up disk and move free space from other partition on the same disk. If there's no available free space on the same disk, you can expand virtual disk for Hyper-V and VMware. After that, additional disk space can be moved and added into C drive.
When there is no free space left in C: drive, try to free up space with Windows Cleanup utility. Then expand C drive with free space in other partition(s) or clone to a larger disk. To a virtual machine, you can expand original virtual disk and C drive without cloning. Besides shrinking, extending and copying disk partition, NIUBI Partition Editor helps do many other operations.