According to Acronis, there are three states of Bitlocker: not there, there but unlocked, and locked. When a drive is locked, Acronis can’t “see” what’s there, so there’s nothing it can usefully do. However, if the state is unlocked, it can. I remember when I first started try to upload my Drive C: to the MCHD I got a warning about the encryption. Not that it mattered because I never succeeded in uploading a Windows Image Backup, even after removing BitLocker. As I said, I would dearly have loved to try your command, but towards the end I had a series of fictitious drives on my computer - X:, Y:, Z: - which couldn’t be disconnected, so I was worried about some kind of “back contamination” and, though frustrated as hell by three weeks of failures, I didn’t dare continue. So I returned my computer to its factory state, wiped the MCHD, and took it back to Currys.
When a computer is running, if the OS is on Drive C:, then BitLocker is in the unlocked state on that drive. So I’m unclear about how this makes it safer. Doesn’t that mean that, if you try to copy it, you’ll be copying an unlocked version, therefore readable to a hacker? So what’s the point of it?
But if you have the OS on one drive and put your data on a different drive, which you lock, then Acronis can’t see it, so, if you want to upload it somewhere, you have to remove BitLocker. Putting it on and taking it off takes a long time if you’ve got a lot of files.
My original goal was to be able to upload a complete copy of my HD somewhere, frequently updatable, which, in the event of a computer crash or hijack, I could overlay onto the unusable HD. It’s turning out to be extraordinarily difficult.
Anyway, for the time being I’m exploring the following:
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Different encryption methods.
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Different upload destinations.
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Just exactly what happens when uploading an unlocked drive.
I’m rather disappointed about NAS drives, not least because the so-called technicians working for the big suppliers (My Cloud, Synology) don’t seem to be very familiar with what their products can actually do. The people in this discussion group are a lot more knowledgeable.