Not enough space on C drive
Many Windows users may find that the C drive is full without reason sometimes, or the
C drive is getting full day after day. The computer may notice you that there is not
enough space on C drive. At this time, the C drive will not big enough, and you may
not be able to perform software updates/upgrades, program installation. What’s more,
the operating system will run slowly. And you cannot store more data/files due to
smaller storage space. So, free up the disk space of C drive is necessary.
Why there is not enough space on C drive
Many users may be puzzled about reason of “not enough space on C drive”. What is
taking up space on the C drive? In general, the main reason for the low disk space
problem is that the C drive is occupied by a large number of files, and the free
space is very limited. If you saved large files to C drive that you are not aware of
(For example, the default download folder is located in C drive), the space of C
dive will get not enough too. Besides, some page files, temporary files, and other
system files may take up space on the system partition.
Solutions of “not enough space on C drive” in Windows 10/8/7
Don’t know how to solve the problem of “not enough space on C drive”? Here provides
you several solutions to free up the disk space of C drive.
Solution 1. Deleted hibernate file
Windows reserves about half of the RAM space for the hibernation file. If the
computer RAM is 8GB, the hibernation file is about 4GB in size. The steps of delete
hibernate file is:
1. Go to start menu, type “cmd” and right click it to run as administrator.
2. Type “powercfg.exe-h off” and press “Enter”.
Then, you will see a few more gigabytes of free space on system drive.
Solution 2. Uninstall some programs
Windows has many built-in programs (especially in Windows 10), and you may never use
some of them. So, you can uninstall the programs that you do not actually need. And
you can also uninstall the programs that won’t be needed in the future to free up
space.
1. Click the start button.
2. Then, click “Control Panel” > “Programs” > “Programs and Features”.
Then, you can right click on the program you want to uninstall and select
Uninstall.
Solution 3. Clean disk
You can also free up space of C drive by empty it.
1. Click “Start”, type “disk” in the search box and select “Disk Cleanup”.
2. In the “Disk Cleanup”, select the drive you want to clean up. Here is C
drive. Click “OK”.

3. After that, it will calculate how much space you will be able to free on C
drive.
4. Finally, choose to delete files you do not need.
Solution 4. Extend C drive without data loss
If there is still not enough space on C drive after all the solutions above, you can
try the next method. Usually, there will be extra free space on other partitions.
And you can add some space to system partition from another partition on the same
hard drive. A powerful third party software can help you to extend your C drive
without delete the partition behind it. Here AOMEI
Partition Assistant Professional is highly recommended, which provides users
many powerful functions like allocated free space. With the help of it, you can
easily solve the problem about there is not enough space on the disk windows 7/8/10
without data loss. The following example will show you the specific steps of using
the free space in D drive to extend C drive:
Step 1.Install and run AOMEI Partition Assistant Professional. Right
click the D drive and select “Allocated Free Space”.

Step 2. In the pop-up window, you can allocate free space from D
drive to C drive. And click “OK”.

Step 3. Finally, click “Apply” > “Proceed” to execute the
progress.
Tips: If you encounter the problem c drive full, you can
also use another function of AOMEI Partition Assistant – Merge Partition to solve
the issue too.
Verdict
Now, you know to deal with the problem not enough space on C drive. Besides Allocated
Free Space, AOMEI Partition Assistant Pro also provides you many other useful
functions like Wipe Hard Drive, Partition
Recovery Wizard and so on. If you want to install Windows to USB someday, AOMEI Partition Assistant can help you too. If the operating system of your
computer is Windows Server, please turn to AOMEI
Partition Assistant Server to enjoy more advanced features.