Compatible operating systems are windows 7, windows 8, windows vista, windows xp sp3 32-bit and 64-bit and mac os x 10.6 or higher reformatting for mac may be required.The laptop that works fine is 64 bit, and was updated from windows 8 to 10.Uploaded on, downloaded 9236 times, receiving a 78/100 rating by 4650 users. First we ll discuss why your seagate external hard drive cannot be detected by your windows pc, then we'll provide you with some effective solutions. Note, software not listed below is not supported on windows 10. Seagate backup plus line of usb ports before. Browse and download the latest software, apps, utilities, plug-ins, and firmware content.