Seagate external HD crashes finder
Hi,
I've been using a Seagate Backup Plus Portable Drive (1 TB) and when I try to transfer files from the drive back onto my Macbook Air, Finder crashes and won't relaunch. It looks like the files are still copying, but no data is being transferred and when I try to stop the process, the window never closes (it just says "Stopping" forever). When I try to relaunch Finder, it won't appear again until I unplug the external HD.
I encounter a worse problem when I try to transfer files between my Seagate drive and another hard drive (where the files ultimately need to be, since it's formatted for Windows computers as well): my Macbook Air crashes and a gray screen appears saying that the computer has restarted because it encountered a problem.
Is there a way to deal with this HD problem without deleting all of my files?
Thank you so much in advance for your help!
MacBook Air, OS X Mavericks (10.9.2)