Zero a hard drive in Linux

You might want to check the drive to see if it is still good in the first place. Go here first: Check hard drive for bad sectors

Unmount the drive: (if you haven't already)
```
sudo umount /dev/sdX*
```
- Check with lsblk to confirm unmounting
Write zeros with progress:

sudo dd if=/dev/zero of=/dev/sdX bs=4M status=progress

Verify drive identifier:

Ensure sdX matches your drive to avoid data loss.