#Linux [Warning, be careful!!!] A DESTRUCTIVE command to render a drive unbootable.

oneshot (55)in #linux • 7 years ago

`$ dd if=/dev/zero of=/dev/fd0 bs=512 count=1`

Overwrites the boot sector. Since this doesn't overwrite any data, you can usually recover by re-creating the partition table exactly the same as before you zeroed it. This can also help sometimes if you install a new drive in a Windows machine which can't read it.