> There’s also `sudo cat /dev/null > /dev/nvme0` That doesn't work. The redirection occurs in the current shell which unless it's already root won't have permi

> There’s also `sudo cat /dev/null > /dev/nvme0` That doesn't work. The redirection occurs in the current shell which unless it's already root won't have permission to write to /dev/nvme0. At the same time, running cat as root isn't needed to access /dev/null. You want something like `sudo sh -c 'cat /dev/null > /dev/nvme0'`. You could also use a program such as `dd` that doesn't require redirection. Edit: as pointed out below, yes, /dev/null is also the wrong device. It returns EOF on read.