The phrase “exclusive” in the report you mentioned likely means: — exclusive to the selected installation drive.
A clean install only wipes the specific drive or partition you choose to format.
A clean install is a highly effective maintenance tool. By taking the time to understand the drive selection screen, backing up your data, and disconnecting secondary hardware, you can achieve a fresh, fast system without losing a single megabyte of your secondary storage. If you are getting ready to refresh your PC, let me know: What are you planning to install? Are you using a desktop PC or a laptop ? How many internal storage drives does your computer have?
When booting from your installation media (USB/DVD), choose the option. Look at the list of drives. does clean install wipe all drives exclusive
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.
If you have multiple drives connected to your computer, a clean install will not affect them by default. However, there are some scenarios to consider:
Note: If a secondary internal drive does not appear immediately, open , locate the drive, right-click it, and select Change Drive Letter and Paths to assign it a new letter (like D: or E:). Summary Table: What Gets Wiped vs. What Stays Safe Drive Type Connection Status Will it be wiped? Primary OS Drive (Target) Yes Everything is erased during formatting. Secondary Internal Drive No Safe, but carries a risk of user selection error. Secondary Internal Drive Disconnected No 100% safe. Completely isolated from the installer. External USB Drive No Safe, but can easily be misidentified in setup. External USB Drive No 100% safe. The phrase “exclusive” in the report you mentioned
If you cannot or do not want to disconnect your internal secondary drives, open in your current OS before restarting. Note the exact total storage capacity of your primary drive (e.g., 476.9 GB for a 500GB SSD) and compare it to your secondary drives. Write these sizes down so you can easily identify the correct drive in the installer menu. Step 4: Proceed with the Clean Install
While the process is designed to be surgical, there are "exclusive" scenarios where other drives could be at risk:
The installation setup program operates strictly on a target partition basis. When you initiate a clean installation, the installer will display a list of all detected drives and partitions. The only drive that undergoes data erasure is the one you explicitly select, format, or delete during that setup phase. By taking the time to understand the drive
Reinstall Windows with the installation media - Microsoft Support
When you perform a clean install (using a USB boot drive or the "Reset this PC" option with the "Remove everything" setting), the installer asks you to select a .
Leave the other drive numbers (your secondary storage) completely alone. Do not click delete or format on them.
One of the most common causes of accidental data loss during Windows reinstallation is the "All drives" option found in the Reset This PC feature. Users who intend to wipe only their system drive but carelessly select "All drives" can lose everything on their secondary drives.
: Data on secondary drives (HDDs or SSDs) typically remains untouched and will be accessible once the new operating system starts. Risks and Scenarios Where All Drives Are Wiped