Why can't I find the simple "Backup" button?
This isn't my first external hard drive so I'm not a complete newbie to this stuff, but I just can't find out how to back my Mac up without clicking and dragging it into the drive... There isn't an option anywhere.
A mac uses the built-in Time Machine system to backup the computer. Simply open Time Machine in the system preferences app and select the Time Machines settings. Once there, turn on Time Machine and set up a backup drive after the seagate drive is plugged into the computer. It should work from there and back up the computer periodically whenever the drive is connected to the computer. The first backup will be the largest because it does the whole operating system with its contents. Subsequent backups will be smaller and quicker. Hope this helps.