Mark

PS: Could the event viewer be of help? It can for example check what blocked USB devices from being safely unmounted (go to Windows logs, System, then click "Filter current logs" and in the field stating "all event ids" enter 225. Then the action panel will display all unsuccesful dismounts. However, it does not show unsuccessful VeraCrypt unmount. Is there a code I could use to filter for those?

Hi, Sometimes, even though all programms using files stored in a VeraCrypt container have been closed, Windows still has something locked within the container. Sometimes it is a handle by explorer.exe, sometimes Outlook.exe not closing completely and having to be shut down with the task manager, etc. Is there any way to find out which process is blocking a container from being unmounted, so I can look into the task manager for this process? I know about Process Explorer, but on some of the systems...

I still wonder what it might have been. I'll be continuing to do the backups this way and if it happens again, I'll write... Maybe we can see what has happened. Especially since the container file itself seemed to be identical. That is what bugs me most...

Hi, the copying and comparing processes have succeeded. All files in the copied container appear to be bit-by-bit identical to the source container.

Thanks again! It is now copying. That will take quite a while for the 1.5TB to go through USB (even with USB-C, the write transfer rate is usually about 100-110MB/sec).

Thanks! I'll use robocopy "C:!VC" "D:" /E /ZB /R:10 /W:3 /COPY:DATS /DCOPY:T /NP /NDL /NFL /Log:D:\robocopy.log then and see if the file is copied correctly...

If I try a regular copy command, it works: copy "C:\VC\1.hc" "D:\1.hc" But if I try to copy the same file with robocopy using your line arguments, I always get this syntax error. robocopy "C:\VC\1.hc" "D:\1.hc" /E /ZB /R:10 /W:3 /COPY:DATS /DCOPY:T /NP /NDL /NFL /Log:D:\robocopy.log then the log reads: Gestartet: Dienstag, 2. Februar 2021 14:09:04 Quelle : C:\VC\1.hc\ Ziel : D:\1.hc\ Dateien : *.* Optionen: . /NDL /NFL /S /E /DCOPY:T /COPY:DATS /ZB /NP /IM /R:10 /W:3 2021/02/02 14:09:04 FEHLER 123...

Sorry, I just can't get robocopy to work. It always tells me the syntax of the directory or filename is wrong, even though it is exactly right... I tried renaming the file and the folder, but still get this: Gestartet: Dienstag, 2. Februar 2021 13:44:26 Quelle : C:\VC\1.hc\ Ziel : D:\ Dateien : *.* Optionen: . /NDL /NFL /S /E /DCOPY:T /COPY:DATS /ZB /NP /IM /R:10 /W:3 2021/02/02 13:44:26 FEHLER 123 (0x0000007B) Zugriff auf Quellverzeichnis C:\VC\1.hc\ Die Syntax für den Dateinamen, Verzeichnisnamen...