@zippyflame5115, as long as you've ensured that all media files were successfully uploaded to your cloud storage, then I think you can free up some space in your SD card or format it to erase all the contents.
I also keep another copy of my files in my external hard drive for backups.
Don't hesitate to reach out if you have any further questions or concerns. Stay stoked, and have fun capturing moments using your GoPro!
SSD if you want fast transfer and if you are going to be traveling around with the external drive. Hard drive for more storage at a cheaper price, and if you aren't going to be traveling with the drive.
