Check your backup
After you have backed up your files, you should make sure that the backup was successful. If it didn’t work properly, you could lose important data since some files could be missing from the backup.
When you use Files to copy or move files, the computer checks to make sure that all of the data transferred correctly. However, if you are transferring data that is very important to you, you may want to perform additional checks to confirm that your data has been transferred properly.
You can do an extra check by looking through the copied files and folders on the destination media. By checking to make sure that the files and folders you transferred are actually there in the backup, you can have extra confidence that the process was successful.
If you find that you do regular backups of large amounts of data, you may find it easier to use a dedicated backup program, such as Déjà Dup. Such a program is more powerful and more reliable than just copying and pasting files.