I cant find out how to make sure my passport backs up altered files only. it backs up the whole computer every time so now is always full. how do I back up altered files only ??
Your passport is just a drive. IT is not doing anything.
What software are you using to do your backups?
In your backup software look for a setting called “Incremental” or “Differential” and set it to one of those depending on your needs.
