Originally Posted by HarryT
Can you explain what you mean by "not completely detected"? In my naivety, I would have thought that a device would either be detected or not. What does "not completely detected" actually mean?
It means that some device connected to the computer has USB IDs that calibre recognizes, but that either no disk drive known by calibre to be associated with the device can be found or the disk drive cannot be written. This situation can arise because the device is non-standard, is new but reuses a previous USB ID, or has firmware changes that calibre doesn't know about. It can also happen if some device is presenting bogus USB IDs.