It is important to distinguish a "clean install" (using external media like a USB) from the "Reset this PC" feature found in Windows settings:
Once Windows is installed, you can plug your other drives back in. They will appear exactly as they were. Final Verdict: Does a Clean Install Wipe All Drives? Standard Clean Install: No. Only the OS drive is wiped.
During the initial phase of a clean install, you will encounter a screen asking, "Where do you want to install Windows?" This screen displays a list of all connected drives and their respective partitions. Accidents happen during this step in a few ways:
The drive or partition you select will be formatted. This erases the operating system, system files, applications, and personal data on that specific drive. does clean install wipe all drives exclusive
Apps downloaded from the Microsoft Store onto a secondary drive usually need to be re-downloaded, as their registry entries on the C: drive were wiped.
Windows will now create new partitions and install the OS on that unallocated space.
A comprehensive backup strategy includes: It is important to distinguish a "clean install"
When you perform a clean install using external media (like a USB drive), you are presented with a "Custom: Install Windows only (advanced)" option. This screen lists all connected drives and partitions.
While the operating system installer will not intentionally wipe your secondary drives, human error and system configurations introduce significant risks. 1. Drive Selection Confusion
Understanding how the process interacts with your hardware is critical to safeguarding your data. How a Clean Install Handles Multiple Drives Standard Clean Install: No
: Only the selected partition will be formatted or deleted if you choose those options. Other Drives
When you hear the term "clean install" of Windows (or any operating system), the immediate fear is that you are about to nuke every photo, document, and game from every hard drive connected to your PC. However, the reality is much more nuanced.
While your data (photos, videos, documents) on secondary drives is safe, applications and video games installed on those secondary drives require a bit of post-installation cleanup.
How many you currently have connected
Before shutting down your computer to begin the installation, open your current OS file manager and note the exact size of each drive. You can also assign distinct names to your partitions (e.g., "OS_Drive," "Games_Drive"). While the custom names do not always appear in the bootloader installation menu, knowing the exact capacity down to the gigabyte helps you identify the correct drive. 3. Disconnect Secondary Drives (Highly Recommended)