You have a server named Server1 that runs Windows Server 2012 R2.
Windows Server 2012 R2 is installed on volume C.
You need to ensure that Safe Mode with Command Prompt loads the next time Server1 restarts.
Which tool should you use?

A.
The Restart-Server cmdlet

B.
The Bootcfg command

C.
The Restart-Computer cmdlet

D.
The Bcdedit command

Explanation:
How To Force Windows To Restart in Safe Mode
1. Open Advanced Startup Options in Windows 8
2. Open Command Prompt.
3. With Command Prompt open, execute the correct bcdedit command as shown below based on
which Safe Mode option you’d like to start:
Safe Mode:
bcdedit /set {default} safeboot minimal
http://pcsupport.about.com/od/repair-recovery/a/force-or-stop-safe-mode-windows.htm