Resuming a failed burn?

[0VERXHEAVEN]

Please forgive me if this is something obvious, I looked and didn't find anything and I'm a complete novice when it comes to burning discs. 

Last night I was running a burn while I slept and woke up to discover it got interrupted partway through thanks to my computer having dismounted every connected USB device; this is not an unusual problem for me, everything just gets spontaneously disconnected and promptly reconnects, real obnoxious in the moment but doesn't cause any real problems. ImgBurn gave me the option to resume, but it couldn't see the drive anymore. My computer had successfully reconnected it but ImgBurn didn't see it, so I figured I just have to close and reopen the program for it to find it again, which it did, but at that point anything relating to that last burn operation was gone. 

Now I have a disc with an incomplete burn, the ISO file, and ImgBurn which knows the burn was incomplete. Attached is the log from the second time I opened the program, since I didn't think to save it the first time, and the results of the verification operation on the incomplete disc. Is there a way I can continue it from where it stopped? What happens if I start burning the ISO again? The disc cannot be erased; is it lost? 

Any advice helps. Thanks. 

ImgBurn.log

[dbminter]

No, a burn cannot be resumed once stopped.  Your disc was a BD-R, so it can't be reused, unlike a BD-RE.  So, just trash it.