If you have an SSD (Solid State Drive), do use DBAN or old-school overwrite tools; they reduce the lifespan of the drive. Instead, download the manufacturer's toolbox (Samsung Magician, Crucial Storage Executive, etc.) and look for a "Secure Erase" option.
: Once booted into the live Linux environment, install a disk wiping tool like shred or dd : sudo apt-get install shred disk wipe windows 7
You’re reinstalling Windows 7 on the same PC. If you have an SSD (Solid State Drive),
Reinstalling the OS creates a fresh file table, but the actual ones and zeros of your old data often remain on the physical platter until they are overwritten. If you have tax returns, saved passwords, or personal photos on that drive, a simple reinstall is an open invitation for identity theft. Reinstalling the OS creates a fresh file table,
You’re getting rid of the computer permanently.