"We have a server at our company where the database runs on drive E. Drive C fills up with about 2-3 GB every day. I'm running out of space, but I can't seem to find why it's filling up so quickly. Since I started monitoring, I've only seen the Windows folder increasing in size. Additionally, pagefile.sys is 9.5 GB. Is that normal?"

As described above, some users find that Disk C keeps filling up for unknown reasons, affecting PC startup speed, software loading, and more. Don't worry. It's actually quite simple to fix this annoying issue – a full Disk C on Windows Server 2012/2016/2008. We'll help you figure out the reason and offer solutions.

4 Ways to Free Up Disk Space on Windows Server C Drive

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Solutions That Work Step-by-Step Troubleshooting
Solution 1. Clean System Disk with Todo PCTrans Download Todo PCTrans > Choose "System Cleanup"...Full Steps
Solution 2. Clean up C Drive with Disk Cleanup Click "This PC" > Right-click on C Drive...Full Steps
Solution 3. Move Large Programs from C Drive to Another Drive Open Todo PCTrans > Select "Application Migration" from the list...Full Steps
Solution 4. Extend C Drive Space Check Disk Management > Start Resizing...Full Steps

Why is my Windows server disk filling up continuously?

No add-ons, but your Windows Server C drive is full. Or after adding some data, you often get the "low disk space" warning on your C drive. The lack of server C drive space might be due to system restore points, temporary files, hidden files, and so on. You can follow the steps below to check how much space has been taken up. Then move on to the part about cleaning up the C drive.

How to Check Disk Usage on a Windows Server:

    Log in to the server computer as an administrator. Then, go to the top-right corner and select Tools > Computer Management > Storage > Disk Management.

4 Ways to Fix Insufficient Disk Space on Windows Server C Drive

The previous part explained the reasons for the C drive issue. The following section will introduce some practical methods to free up space on the C drive. Some users might say, “Use Disk Cleanup again; delete temporary files.” Don't worry. In addition to these common methods, we will explain another solution. Let's get started!

[1] Use the Todo PCTrans tool to clean up the system disk

Too much junk files will slow down your computer performance. A reliable disk cleaner tool can help you easily free up space. To quickly remove junk files, the Todo PCTrans Tool comes with a "System Cleaner" feature that can regularly clean up junk files (such as system files, browser caches, app junk files, etc.) to refresh your server computer.

Start getting more space, download tool Todo PCTrans:

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A detailed guide to cleaning up your C drive:

Step 1: Launch Todo PCTrans on your computer. Click “System Cleanup” and then hit the “Scan” button to proceed.

System Cleanup - Step 1

Step 2: Once the scan is complete, a list of junk files will be displayed. Choose the ones you want to get rid of. Be careful not to delete anything that might affect your computer or software's performance.

System Cleanup - Step 2

Step 3. Click the “Clean” button and confirm the cleanup. You can use this feature regularly to free up disk space.

System Cleanup - Step 3

2. Free up C Drive space with Disk Cleanup

Accumulation of junk files, unnecessary files

Step 1: Click on "This PC". Right-click on the C drive and select "Properties" from the menu.

Fix C drive full issue - 1

You should see an option for “Disk Cleanup” within the window – select it.

Step 2: Select the options to clean temporary files and the Recycle Bin. Click OK.

Fix C drive full issue - 2

Windows also automatically wipes data from temporary files and the Recycle Bin.

Step 1: Go to Settings > Storage > and under Storage sense, check if it's on.

Step 2. Turn on the Storage Sense toggle.

Step 3: Configure the cleanup schedule.

3. Move a Large Program from the C Drive to Another Drive

If Disk Cleanup doesn't work for you, try using the "App Migration" feature of Todo PCTrans to move your installed programs to another location. Since deleting extra files didn't help with the disk space, I suggest checking if your software installations are occupying too much space. With Todo PCTrans, you can migrate two programs for free. Need to move more? Upgrade to access more options.

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How to Move Files from the C Drive to Another Drive in Windows

Step 1: Run the Todo PCTrans tool on your computer

Go to "App Migration" and tap "Start" to continue.

Select the app migration transfer mode Select the app migration transfer mode

Step 2: Select the programs you want to move from C drive to another disk

1. Select the C drive and choose the programs you want to move (marked as “Yes”).

2. Click the triangle icon and select another disk on your computer as the target location, then click “Transfer” to start the process.

Select the apps to transfer select programs to transfer

Step 3: Complete the transfer

Wait for the transfer to complete, then click “OK” to confirm.

Finish moving the app to another drive

When it's done, if necessary, you can reboot your PC, which will preserve all the changes on your PC and allow you to run the program from another hard drive without having to reinstall.

4. Extend the C Drive Space

The last case is that the temporary files have been cleaned up, and there are no other large files on drive C. However, the drive still fills up for no reason. The reason might be that the size of drive C is limited. A server computer also needs more free space to hibernate the paging file. You can use third-party software – extend C drive partition and disk management tool Partition Master to increase the C drive space. It can manage disk space quickly and effectively and improve performance.

Conclusions

A full C drive on Windows Server 2012/2016/2008 can be caused by many factors. Hence, we have filtered out manual methods and two third-party tools for you. Todo PCTrans is a practical disk cleaner that can free up C drive space. Apart from this, the software also features the ability to transfer files between two PCs.

If the above solutions don't work for you, please feel free to contact us via live chat. We offer 24/7 support.