Seagate expansion drive 2TB not recognized on windows after mac After i connected my seagate expansion drive to my macbook air, it opened normally as  far as  i remember

But now if i'm connecting it on windows 7, it shows that driver installation and the option for ejection, but it doesnt show it on my computer

So, has the mac made any changes on it?
Try downloading the driver directly from the Seagate site before plugging it back into your windows computer.