I purchased a Seagate Goflex home 3TB NAS system in 2012 that I now need to remove files from. I have forgotten the password sadly so after much research decided to remove the drive from the Goflex case to connect to my MacBook Pro via SATA to USB cable or the Insignia dual hard drive docking station. But the Mac won't see the drive on either of these. So, now I have a Seagate Barracuda 3.5" SATA drive that I still can't access because my Mac doesn't see it. I'm at a loss. Any help would be much appreciated.