Restaurar USB de instalación

22-08-2019
``` sudo dd if=/dev/zero of=/dev/sdX status=progress ``` Puede ser bastante lento. Un pendrive de 128GB tardó unas 7 horas. Normalmente puede valer con: ``` dd if=/dev/zero of=/dev/sda bs=4096 count=4096 ``` [https://unix.stackexchange.com/q/275243](https://unix.stackexchange.com/q/275243) "This will zero out the first 16 MiB of the drive. 16 MiB is probably more than enough to nuke any "start of disk" structures while being small enough that it won't take very long."