ok folks like I said, we know of issues where the external (or some internal) hard drives which were working fine on prior version (<1607) fine, but after the Anniversary update 1607, they are either inaccessible or show up as RAW in disk management. We
are working very actively to understand these issues and analyze the data we have. We are making good progress.
Meanwhile, all folks who have such an issue, can help us by providing some information about your disks.
We have diagnostic tools that can get metadata information from such affected disks.
Paulsey is an admin of this forum and he can contact you with private messages.
I will let PaulSey know to reach out to folks on this thread.
If you are willing to provide us data, that will expedite in understanding the breadth of issues and help us fixing all scenarios.
Thanks for your help with this and appreciate your working with us.