Safe Mode:

<strong>bcdedit /set {default} safeboot minimal</strong>

Safe Mode with Networking:

<strong>bcdedit /set {default} safeboot network</strong>

Safe Mode with Command Prompt:

<strong>bcdedit /set {default} safeboot minimal
bcdedit /set {default} safebootalternateshell yes</strong>

To Remove either use msconfig to return to a normal boot or:

<strong>bcdedit /deletevalue {default} safeboot</strong>