Ten days after you upgrade to Windows 10, your previous version of Windows will be automatically deleted from your PC. If your drive is low in space, you can manually delete the previous version of Windows installation. This article describes 3 ways to delete Windows installation files on Windows 10 PC.
Deleting your previous version of Windows installation(s), here is how:
Step 1: Open Settings app, click System > Storage.
Step 2: Click on This PC and then scroll down the list and choose Temporary files.
Step 3: Under Remove temporary files, select the Previous version of Windows check box and then choose Remove files.
Windows .old folder contains a copy of the previous Windows installation in C: disk, and it takes up much of storage. It can free up several GBs of disk space by using the Remove previous Windows installations option in Disk Cleanup Tool.
Step 1: Open the Disk Cleanup tool in the Run.
Press Win+R to open Run dialog, type cleanmgr, and then hit Enter key.
Wait while the system is calculating the amount of the used space.
Step 2: Once the tool opens, click Clean up system file button.
Step 3: Scroll down till you see Previous Windows installation(s). Check this option and click on OK.
Step 4: Click on Delete Files to complete the task.
While there you may also want to delete these upgrade & installation files:
If you can't remove the Windows .old folder and other related files with the above options, you can try to remove Windows .old Folder using Command Prompt.
Step 1: Open Command Prompt as administrator.
Press Windows logo + X shortcut keys, then hit A key on the keyboard.
Step 2: In Command Prompt window, execute the delete command below, and press Enter.
RD /S /Q %SystemDrive%windows.old
Or execute this command step by step if you like:
Windows .old 資料夾將會立即刪除。
第1步:您需要在Windows 10中使用進階啟動選項開啟啟動時的命令提示字元。
第 2 步:下一步是 啟動時驗證 Windows 10 磁碟機代號.
Windows 10 磁碟機號碼在啟動時可能不會總是像 Windows 啟動時那樣是C:,因此請務必在執行命令之前驗證其磁碟機號碼。
1.在命令提示字元中,輸入 diskpart,然後按 Enter。
2.然後輸入列出音量並按Enter。
3.從列出的磁碟區中,尋找並驗證您的 Windows 10 磁碟機的磁碟機號。
4.最後,輸入exit並按Enter鍵。
步驟3:然後執行刪除Windows .old資料夾指令如下:
RD /S /Q "D:Windows .old"
提示:D 是您先前版本 Windows 的實際盤符,因為它的大小為 47GB。另外卷太小無法存放系統資料夾
第四步:關閉命令提示字元。然後點選繼續將電腦重新啟動到Windows 10。
Windows .old 資料夾將會立即刪除。
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