How to set/unset Windows 10 to boot in safe mode using command prompt

After reboot press ESC then F11 to enter system recovery mode, then select Troubleshooting then "Advanced Options" then "Command Prompt".

After command prompt appears type following
bcdedit /set {default} safeboot minimal and press Enter. or
bcdedit /set {default} safeboot network and press Enter. or
bcdedit /set {default} safebootalternateshell yes and press Enter.

Close command prompt

On "Choose an option" screen press Continue

To Unset the safe mode booting, follow above steps till command prompt and then enter command
bcdedit /deletevalue {default} safeboot and press Enter.