I would like to completely wipe all partitions and the master boot record and to make sure that the disk is zeroed out. I was looking around and see different variations of the dd command.
1. Is this the correct command to run?
sudo dd if=/dev/zero of=/dev/sda bs=1M
2. Will this erase the Master Boot Record?
3. What does each part of the command mean?
4. Would this command erase all of the drives on the PC?
sudo dd if=/dev/zero of=/dev/ bs=1M