Step 2: When the Command Prompt window pops up, please type the powercfg /hibernate on command and hit the Enter key to run it. Step 1: Type cmd in the Cortana’s search bar, select Command Prompt and right-click it to select Run as administrator. How to get back Hibernate option? You can follow the tutorial below. Note: Before deleting the large file to free up disk space, you should learn about what file can be deleted.