Help trouble-shooting Event 1530

At shutdown I've been getting a registry leak.:

5 user registry handles leaked from \Registry\User\S-1-5-21-2987587682-1074968332-1067063631-1001:
Process 980 (\Device\HarddiskVolume3\Windows\System32\lsass.exe) has opened key \REGISTRY\USER\S-1-5-21-2987587682-1074968332-1067063631-1001
Process 980 (\Device\HarddiskVolume3\Windows\System32\lsass.exe) has opened key \REGISTRY\USER\S-1-5-21-2987587682-1074968332-1067063631-1001
Process 980 (\Device\HarddiskVolume3\Windows\System32\lsass.exe) has opened key \REGISTRY\USER\S-1-5-21-2987587682-1074968332-1067063631-1001\Software\Microsoft\SystemCertificates\Disallowed
Process 980 (\Device\HarddiskVolume3\Windows\System32\lsass.exe) has opened key \REGISTRY\USER\S-1-5-21-2987587682-1074968332-1067063631-1001\Software\Microsoft\SystemCertificates\My
Process 980 (\Device\HarddiskVolume3\Windows\System32\lsass.exe) has opened key \REGISTRY\USER\S-1-5-21-2987587682-1074968332-1067063631-1001\Software\Microsoft\SystemCertificates\CA

1. Volume3 harddisk is the micro disk (SD) built-in reader. Why is that device holding the registry open when there is no micro-disk in it at shutdown? Is there a way to shut the volume down prior to shut down?

2. Note please: In other user profile warnings for Volume 3, various processes are listed: process 988, process 568, process 560 and, as show above, process 980. Again all involved HardiskVolume3 -- the micro disk reader I use to look at camera disks.

Thanks.