I have three small excel folders which are for our bank accounts and are located in documents with a desktop shortcut.I have Seagate external drive and on checking I saw that those three folders were located on it.I do not understand how they can be on there as most of the time it is not connected to the laptop.I have just updated one of the folders then plugged the Seagate drive in and folder was now up to date even though when I did the update the drive was not connected to the laptop.Can someone explain.
Have you installed any software that came with the Seagate drive? If you have, either by accident or design, you may well have, inadvertantly, set up the drive to automatically back up files to it when connected.
Is this how I format the drive
Make sure the storage device is connected to and mounted on the computer.
Select Go > Utilities in the Finder menu bar.
In the Utilities folder, double-click Disk Utility. ...
Select the Seagate drive in the left column.
Click the Erase tab.
Choose a format from the drop-down window.
Enter a name for the volume.