I appreciate you're trying to help Brian.
I'm not going through the upload fiasco again, don't have the patience ATM. Here's what's listed in PartWork for the disk;
MBR0 Partition 476938 MiB Extended
Backup Volume 50000 Mib NTSF
There are 4 more Volumes listed, same as Backup, except for size. The MBR0 entry only showed up after I had converted MBR to EMBR and back, when I first set up the multi-boot system. Seems like MBR0 is a wrapper for the EMBR, but I don't know if the partition table will get pooched if I just delete it. I know I can fix it, if so, and I know I can just back everything up, wipe it and restore the partitions, but between a broken back and helping a cousin who's mother had a stroke and burned the house down, I don't have time or patience to do it just now. Was hoping for a simple yea/nay answer, seems like a common thing, switching to and back, hoped it was a common issue.