How to Clean My C Drive in Windows 10 without Formatting

If your C drive (C:) is almost full, how do you clean it up to free up disk space? Some people want to format the C drive to get rid of all unwanted files. But in reality, this is impossible. Windows 10 does not allow you to format the C drive because it contains the Windows operating system you are using. So, how do you effectively clean the C drive in Windows 10 without formatting? Now this post will give the most effective solutions.

• 1. Uninstall unnecessary apps from C drive
• 2. Delete unneeded large files on C drive
• 3. Run Disk Cleanup to clean C drive
• 4. Use System Refixer to clean C drive

How to clean C drive in Windows 10 without formatting

If you have been using your Windows 10 for a while, your C drive must have accumulated a lot of unnecessary files, including applications, downloaded large files, various data caches, temporary files produced by the Windows system or some programs, and more. So, you can start from these aspects to effectively clean your C drive instead of trying to format it.

1. Uninstall unnecessary apps from C drive

We always like to install new applications (and often on C drive), but forget to uninstall them when we no longer need them. Over time, many unneeded applications take up valuable C drive space. So, uninstalling unnecessary apps is an essential step in cleaning the C drive.

Step 1: Press Win + I to open the Settings app in Windows 10. Then choose Apps.

Step 2: On the Apps & features page, scroll down and you can see all apps currently installed on your computer. You can choose to filter by C drive (C:) and sort by size, so you can see more easily how much space each application takes up on your C drive.

Step 3: Select the unwanted app and click Uninstall to uninstall it.

2. Delete unneeded heavy files on C drive

Your C drive may have stored some heavy files which you downloaded before. This is very common because most downloaded files are saved in the C drive by default. Deleting large files that are no longer needed is also an essential step in cleaning your C drive.

Step 1: Open your C drive through the File Explorer.

Step 2: In the search box in the upper right corner, type size:gigantic. This will scan your C drive for all files larger than 128 MB.

Step 3: When the scan is complete, all files larger than 128 MB are displayed here. Select all unwanted files and delete them. After deleting, don't forget to empty the Recycle Bin.

Beside large files, identical files should be the redundant files you also want to remove from your drive. So, how to efficiently find and delete duplicate files on your C drive? Here you can use iSumsoft DupFile Refixer to locate duplicate files on C drive and clean them up to easily free up your C drive.

Note: Deleting any system file on C drive might corrupt your operating system. Don't worry. iSumsoft DupFile Refixer can help you to skip hidden and system files present in your C drive, so as to avoid accidently deleting system files.

3. Run Disk Cleanup to clean C drive

Now it's time to get rid of unnecessary system junk generated by Windows and other programs from your C drive. To do this, just run the Disk Cleanup app in Windows 10.

Step 1: Open the Disk Cleanup app by typing disk cleanup in the Start menu search box.

Step 2: Disk Cleanup will ask to select the drive you want to clean up. Select the C drive and click OK.

步驟 3：在「磁碟清理」標籤下，選擇要刪除的所有文件，然後按一下「確定」將其從硬碟中永久刪除。此處列出的所有文件類型對於您的 Windows 10 系統來說都是不必要的。刪除它們是安全的。請務必檢查那些佔用大量磁碟空間的檔案類型，包括回收站、臨時檔案、下載的程式檔案等

第四步：選擇更多選項選項卡。在「系統還原和磁碟區副本」部分下，按一下「清理」按鈕以刪除 C 磁碟機上儲存的舊的、不需要的還原點。

4.使用System Refixer深度清理C碟

如果你想刪除更多不必要的檔案來更深入地清理你的C盤，第三方Windows清理工具將是最好的選擇。 iSumsoft System Refixer 就是這樣一款工具，可以幫助您清理 C 磁碟機中所有不需要的文件，例如各種快取和 cookie、ISS 日誌檔案、掃描歷史記錄等等。

第 1 步：在 Windows 10 上下載並安裝 iSumsoft System Refixer。安裝後，啟動此工具。

第 2 步：選擇全部清除選項，然後按一下掃描。該工具將掃描您的 C 碟以查找所有不必要的文件。

第三步：掃描完成後，C盤上所有不需要的文件類型都會顯示在螢幕上。確保選取所有要刪除的文件，然後按一下清理按鈕將其全部清理。

底線：

以上是微軟和IT專家推薦的在Windows 10中無需格式化即可清理C碟的最有效方法。如果您採取以上所有措施，相信您可以清除至少20GB或更多不必要的垃圾檔案。你的C盤。如果清理後C盤空間仍然不夠，可以考慮擴充C盤

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