My external hard drive works perfectly fine on my desktop (Windows 7), my laptop (Windows 8.1) but when I plug it into my brothers computer and my fathers (Both have windows 10) they say my drive is unallocated but it really isn't. My drive use to work on Windows 10 but it was after the very recent update (Like a few days ago) it has stopped loading my data on Windows 10 PCs. Any thoughts?