Does Clean Install Wipe All Drives Exclusive ^new^ Direct

During the operating system setup, you will reach a screen asking, This screen displays a list of all detected drives and their individual partitions.

Before starting the clean install, make sure to back up all your important files and data to an external drive or cloud storage.

If you have (e.g., one 1TB SSD) but split it into multiple partitions (C: for Windows, D: for data), a clean install that deletes all partitions will wipe the entire physical drive — including your D: data partition. does clean install wipe all drives exclusive

The short answer is It only overwrites the specific drive or partition you select for the installation.

Files on separate physical hard drives (like a dedicated "D:" or "E:" drive for games or photos) are not affected unless you explicitly select them for formatting or deletion during the manual setup. Risks and Recommendations During the operating system setup, you will reach

While the process is designed to be selective, all drives can be wiped if you:

A clean installation removes all of the following items: Personal files. Apps. Customizations from the device manufacturer. Microsoft Support The short answer is It only overwrites the

| | Desired Outcome | Method | Result on Secondary Drives (e.g., D: or E:) | | :--- | :--- | :--- | :--- | | Single Drive with C: partition only | Wipe the drive and install fresh Windows | Standard Clean Install (boot from USB) | N/A – The only drive is wiped. | | Single Drive with C: (OS) and D: (Data) | Wipe only the C: drive and install Windows, keep all data on D: | Clean Install from USB, delete only C: partitions | D: drive remains intact and all data is preserved. | | Multiple Drives ( C: on Drive 0; D: on Drive 1) | Wipe only the C: system drive | Standard Clean Install from USB, install to Drive 0 | All data on Drive 1 ( D: ) remains untouched and accessible. | | Multiple Drives ( C: on Drive 0; D: on Drive 1) | Wipe EVERYTHING on all drives | Reset this PC > Remove Everything > "All drives" | All data on Drive 1 ( D: ) is completely wiped. | | Any Drive (for security) | Permanently erase all data from a specific drive to make it unrecoverable | Boot to USB or Command Prompt, use DiskPart > select disk X > clean all | The clean all command permanently destroys all data on the selected drive. |

This is the most critical phase of the installation. If your secondary drives are connected, they will appear in this list as "Drive 0," "Drive 1," "Drive 2," and so on. Accidents happen here for two reasons:

Sometimes, users realize their files were only on the desktop (C: drive), which is wiped. Even if the secondary drives are safe, your primary user profile data is gone. How to Ensure "Exclusive" Wiping