====== JUNOS FULL RESET ======
Pure reset to "Factory default", means doesn't have root password.

===== Command =====
  * 其實這指令一直感覺不是很 OK，因為都清得不是很乾淨<code>
root> request system zeroize
warning: System will be rebooted and may not boot without configuration
Erase all data, including configuration and log files? [yes,no] (no) yes

warning: zeroizing re0

.........
.........
</code>
  * JUNOS 11.4 開始多了一個新指令，清得一乾二淨包含 root 密碼！<code>
root> request system zeroize media
warning: System will be rebooted and may not boot without configuration
Erase all data, including configuration and log files? [yes,no] (no) yes

warning: ipsec-key-management subsystem not running - not needed by configuration.
warning: zeroizing fpc0

.........
.........
</code>