DBAN will overwrite every sector of your hard drive with random data. A 500GB drive takes 4–8 hours. A 1TB drive can take 10+ hours.
When finished, the drive is completely blank – no OS, no partitions, no recoverable data. The PC will show “Operating system not found.” ⚠️ Warning: This destroys everything . You cannot undo it. After a DBAN wipe, the drive is empty forever. What About SSDs? (Important!) If your Windows 7 PC has a Solid State Drive (SSD) instead of an old mechanical hard drive, do not use DBAN .
autonuke
and press Enter.
To truly wipe a drive, you must overwrite every single sector with meaningless data (zeros, random characters, or multiple patterns). | If you want to... | Use this method | |------------------|------------------| | Keep using the PC (reinstall Windows 7 or another OS) | Method 1: Clean Install via Windows 7 Disc | | Scrap/sell the drive or PC for parts | Method 2: Bootable Secure Erase Tool | Method 1: The “Good Enough” Wipe (Reinstalling Windows 7) This method does not offer military-grade security, but it will stop 95% of casual data recovery attempts. It’s fine if you’re keeping the computer. windows 7 wipe hard drive
Select each partition and click Delete until you have only “Unallocated Space.”
Use free software like Rufus (on a Windows PC) or balenaEtcher (on Mac). Point Rufus to the DBAN ISO and write it to your USB drive. DBAN will overwrite every sector of your hard
When you see “Where do you want to install Windows?” – don’t click Next yet.