1970 + 1457038624
Remove all Partitions:
diskutil list
diskutil eraseVolume free freespace /dev/diskXs1
sudo dd if=/dev/zero of=/dev/diskX bs=4096 count=8
or:
sudo diskutil zeroDisk /dev/diskX -force
Prevent the system to sleep for some hours:
caffeinate -i -d -m -s
Option -i prevents idle sleeping, -d stand for display, -m for disks, -s for system.