I have done the equivalent. I have either turned off power, removed discs from each drive individually.
Sir, I am convinced that this problem relates to the Device Manager configuration. The system may sort out the problem itself.
After that particular operation failed--which was the end of a sequence: DVD Decrypter, DVD Shrink, ImgTool, Burn. Essentially the first three items had completed. Only when the DVD-RW drive became involved did the excrement emerge.
But later, in an alternative operation, I seemed to have written the files to the DVD with that DVD-RW drive. But something went awry before the disc housekeeping wrapped that corrupted the DVD. The title of the DVD is presence, but the DVD won't play.
I am preparing to begin another sequence with a different DVD to determine if my luck has changed.
Your interest is appreciated.