When it comes to formatting an old PlayStation 4 hard drive, there are a few things you need to keep in mind. First, make sure that your PS4 is properly plugged into an electrical outlet and that the hard drive is properly connected to the motherboard. Second, make sure that your PS4 is booted up and that the system is in “safe” mode. Finally, make sure that you have a copy of Windows 7 or 8.1 installed on your computer and have access to a USB drive. Once all of these conditions are met, follow these steps to format an old PlayStation 4 hard drive:

  1. Open Windows Explorer and navigate to the “C:\Users<username>\AppData\Roaming.Playstation” folder.
  2. Copy the following file into this folder: “FormatHardDrive.exe”.
  3. Paste this file into Windows Explorer and click on it.
  4. In Windows Explorer, click on the “New Folder” button and name the new folder “PS4”.
  5. Click on the “Create Folder” button and enter a path for your new PS4 hard drive in the “Name” field.
  6. Click on the “OK” button and close Windows Explorer.
  7. Reboot your PlayStation 4 by pressing power-on/off (or by hitting reset). After reboot, open Windows Explorer again and paste in the following line of code: “%USERPROFILE%\AppData\Roaming.Playstation\Hard Drives\PS4”. This will create a new directory inside of which you will be able to find your newly formatted PS4 hard drive.