my seagate external backup says it's full. how do i free up space?

Hi there Graciegirl,

If you would like to delete files from this external hard drive, these steps from Delete files and folders on Mac show how to do this:

Delete files and folders on Mac

At any time, you can get rid of files, folders, and other items that you no longer need. You start by dragging items to the Trash in the Dock, but the items aren’t deleted until you empty the Trash.

Empty the Trash

1. On your Mac, click the Trash icon in the Dock.

2. In the window that appears, do one of the following:

* Empty one item from the Trash: Control-click the item you want to delete, then choose Delete Immediately.

* In the warning message that appears, click Delete.

Empty all of the Trash: Click the Empty button in the upper-right corner of the Finder window. You can also click the Finder icon  in the Dock, then choose Finder > Empty Trash.

* In the warning message that appears, click Empty Trash.

Items that you move to the Trash from your Mac remain until you empty the Trash. You can choose to automatically empty the Trash in Finder preferences.

Items that you move to the Trash from iCloud Drive are automatically emptied from the Trash after 30 days, regardless of Finder preferences. You can choose to empty the Trash sooner than 30 days.

WARNING: Any items emptied from the Trash are no longer available.

You can also use the recommendations outlined here to make more available storage space on this hard drive and on your Mac: Free up storage space on your Mac - Apple Support

We hope that helps!