I have a MSS 48X. I had 4 drives anad needed to upgrade one of them (the one in Bay 4). So I hooked up a new larger drive externally via the USB port and then through the consol added that as a new storage device and "removed" the one in Bay 4. Many hours later the data transfer was completed, by which time the drive in bay 4 was freed up.

I then shut the system down and removed the Bay 4 drive and replaced it physically with the drive in the external enclosure. On re-boot I was expecting the system to recognize that I had physically moved the new drive as I've successfully done this once before.

But no. This time the system shows the external drive as "missing" and it shows the new drive now sitting in bay 4 as available to be added. But on attempting to add it, the system assumes it must be re-formatted.

It's my understanding that (non-system) drives can be moved around, as I have done here. And as I say, I've done this once before with success. But it's not working now.

Any thoughts as to what I'm missing this time round?

As an aside, as you will see in a separate thread, when I added this new drive, the amount allocated to "system" shot up from 23Gb to a whopping 773Gb. I still haven't found an explanation for that.