Skip to content
Follow
Windows 🟢 Beginner

How to Safely Delete Your Old Windows Version

Richard
Written by
Richard
Jul 4, 2026 Updated Jul 10, 2026 2 min read
How to Safely Delete Your Old Windows Version
How to Safely Delete Your Old Windows Version

Deleting your old Windows version frees up significant disk space after an upgrade.

The old Windows version is essentially a backup copy stored on your drive. It lets you roll back to a previous Windows installation if something goes wrong with your new setup. Windows usually removes this backup automatically after about 10 days.

Manually deleting an old Windows version frees up many gigabytes of storage space, often more than 20 GB on a typical installation. You can perform this deletion when you are certain you will not need to revert to the previous Windows version.

Make sure to back up important files before you start. You’ll also need administrator rights on your PC to complete the deletion.

⚡ Quick Answer

Delete your old Windows version by going to Settings > System > Storage. Click Temporary files, select “Previous version of Windows,” and then click Remove files. Confirm the deletion to reclaim disk space.

Step 1Go to Storage Settings

Let’s start by locating where Windows displays your disk usage.

Press the Windows key on your keyboard (it has the Windows logo) or click the Start button in the bottom-left corner. Then, click the Settings icon (it looks like a gear). Choose System, and then click on Storage.

Windows 11 Storage settings screen showing disk usage breakdown.
Windows 11 Storage settings screen showing disk usage breakdown.

Step 2Find Temporary Files

Temporary files are often where your old Windows version is hiding, ready to be deleted.

Temporary files reside on your main drive, typically labeled "C:". Clicking the "Temporary files" option initiates a scan that identifies files Windows can remove to free up storage space on your computer, potentially freeing up 5 gigabytes of space.

Windows Storage settings showing temporary files category.
Windows Storage settings showing temporary files category.

Step 3Choose the Old Windows Version to Delete

To delete the old Windows version files, find ‘Previous version of Windows’ in the list of temporary files. Put a checkmark next to it to select it for removal. Then, click the ‘Remove files’ button at the top to start deleting the old Windows files.

In the list of temporary files, locate the entry for ‘Previous version of Windows.’ Place a checkmark in the box next to it, then click the Remove files button located at the top of the list.

Windows temporary files screen with old Windows version highlighted for deletion.
Windows temporary files screen with old Windows version highlighted for deletion.

Step 4Confirm Deletion

⚠️Warning
Confirming the delete old windows version action is the final step to permanently remove old operating system files. Once you confirm, you cannot get the deleted Windows version back. This means you will lose the ability to go back to your old Windows if you proceed with the deletion.

The confirmation window reminds users that deleting the old Windows version cannot be undone. Users will lose the ability to return to the previous Windows version. If users are sure about deleting, they click Del.

Before deleting your old Windows version, carefully confirm the action. Once confirmed, Windows 10 deletion is permanent and cannot be undone. Ensure all necessary files and settings from the old Windows are saved. If unsure about any data, cancel the deletion process to allow more time for checking.

Reference:

Summary

You can delete your old Windows version to free up storage space, but you’ll need administrator rights.

Was this guide helpful?

Tags: #Windows 11
Was this helpful?
Richard

About the Author

Richard

Tech Writer, IT Professional

Richard, a writer for Geek Rewind, is a tech enthusiast who loves breaking down complex IT topics into simple, easy-to-understand ideas. With years of hands-on experience in system administration and enterprise IT operations, he’s developed a knack for offering practical tips and solutions. Richard aims to make technology more accessible and actionable. He's deeply committed to the Geek Rewind community, always ready to answer questions and engage in discussions.

📚 Related Tutorials

How to Back up and restore with Windows Backup in Windows 11
Windows How to Back up and restore with Windows Backup in Windows 11
How to fix Sound issues when you share your Computer's Sound in Microsoft Teams
Windows How to fix Sound issues when you share your Computer's Sound in Microsoft Teams
How to Delete System and Point-in-time Restore Points in Windows 11
Windows How to Delete System and Point-in-time Restore Points in Windows 11
How to Change how often Windows Optimizes Your Drives in Windows 11
Windows How to Change how often Windows Optimizes Your Drives in Windows 11

No comments yet — be the first to share your thoughts!

Leave a Comment

Your email address will not be published. Required fields are marked *