Internal or external drives not selected for installation remain Partitions:
If you are about to start this process, I can help you double-check your steps. To give you the best advice, let me know: Are you using Windows, macOS, or Linux Do you have multiple physical disks (e.g., an SSD and an HDD) or just one disk split into partitions Do you have an external drive available to back up your critical files first? does clean install wipe all drives exclusive
But if you mean “does it wipe all drives without exception?” — , not by default. You’d need to explicitly delete partitions on other drives for that to happen. Internal or external drives not selected for installation