I went back to the the system registry case where the device is seen as Removable (= Verwisselbaar in Dutch)
Indeed the MountedDevices key now corresponds to Removable device
Does it/they?
If I read correctly the screenshot you posted:
1) BOTH drives P: and Q: belong to the USB stick
2) drive P: entry begins with 5F 00
3) drive Q: entry begins with 7b 00
If you weren't such an old and respectable member of the board , besides an old friend , and had I not been in an exceptionally good mood today , I would have probably told you:
1) we DO NOT §@ç#ing care about your desktop
2) you should post readable screenshots (ONLY of the relevant information window(s))
3) even better save the key to a .reg file and post that INSTEAD
My grumpiness must be softening up with age ....
Seriously, do export the mounted devices key (both the "fixed" and the "removable" one) besides possibly understanding what are the actual values (which are seemingly not "removable media" and certainly not disk signature) maybe I could be able to put a date to the UUID (or do it yourself):
http://reboot.pro/to...mounteddevices/
so at least one would have a timeline on when it happened first time.
Wonko
P.S. Another form for "removable media" could be something beginning with:
5F 00 3F 00 3F 00 5F 00 55 00 53 00 42 00 53 00
54 00 4F 00 52 00 23 00 44 00 69 00 73 00 6B 00
26 00 56 00 65 00 6E 00 5F
i.e. _??_USBSTOR#Disk&Ven_