The only foolproof method. Unplug the SATA or power cables for secondary HDDs/SSDs before starting. Unplug USBs: Remove external backup drives and thumb drives. Label Your Drives:
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.
One Microsoft Q&A user described this exact scenario: after resetting Windows, they lost everything on both their primary and secondary drives. A Microsoft support responder confirmed that once this happens, the drive is formatted and the files are gone. While third-party recovery tools like Recuva might offer a slim chance of recovery, the outlook is generally bleak. does clean install wipe all drives exclusive
The clean install is not for security-level wiping. If your goal is to completely and permanently erase a drive, you need a different tool. Within the Windows installation environment, you can open a Command Prompt (press Shift + F10 ) and use the DiskPart utility.
Choose . This option gives you full control over your drives. Step 4: Carefully Manage Partitions The only foolproof method
This misunderstanding carries significant consequences. The most benign is anxiety: users fearing total data loss may postpone a much-needed system refresh. More dangerous is the false sense of security. Someone selling or donating a computer might assume a simple clean install has erased their personal files from all drives, when in fact a secondary drive or partition still holds tax returns, private photos, or browsing history. True data destruction requires specialized software (like DBAN for HDDs) or physical destruction of the drive—not a routine OS reinstallation.
Apple users have a slightly different landscape due to the Apple Silicon chips (M1/M2/M3) and Intel T2 security chips. Label Your Drives: If you have (e
There are two scenarios where a clean install might affect other drives:
A very specific question!