Windows 10 Windows 10 HORM - Unable to persist data in unprotected volume

[Shanavas Pallippurath]

With HORM enabled, unable to retain data stored in Unmounted volume on a Windows 10 desktop.

Desktop config: Windows 10 x64, 1809, KB4501835 applied.

Steps followed:

1. Open Administrator command prompt

2. shutdown /h on

3. uwfmgr.exe filter enable
4. uwfmgr.exe volume protect all
5. uwfmgr.exe filter restart
6. Unmount D drive so I can store new data
Tried two ways, one at a time
a. mountvol D: /P
b. diskpart > Select <Volume#> > remove
7. uwfmgr.exe filter enable-horm
8. shutdown /h
9. Power on the system

10. Mount D drive: mountvol D: <GUID>

11. Store new file in D drive, this I want to persist across boots.

12. Reboot the system by "shutdown /r /t 0"

13. Mount D drive: mountvol D: <GUID>

14. The new file created in step 11 is NOT available in D drive.

Any idea how to achieve storing data in D drive with HORM enabled?

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