Hi Katherine, I'm Graeme, an independent adviser here to help.
Here are the steps you can follow to format your E: drive. Please note that this will remove all files on the drive, so make sure there's nothing on there you don't want to lose.
- Go to File Explorer (Windows Key+E)
- In File Explorer, right-click your E: drive and select Format...
- Enter the settings you'd like, then choose Quick Format.
Hopefully this helps! Please let me know if you need further support! Thanks!