Incorrect volume reporting is usually a sign of a bad SSD. At least one person on here is going to tell you to reformat the drive, so I'll beat them to it. I don't know how computer savvy you are but there are many options for formatting a drive. And while some might recommend formatting via the drone, it's been my experience that DJI drones don't do low-level formatting. Formatting is more a tool for troubleshooting than a fix. If the drive won't format in Windows, chances are there is an issue with the drive itself.
It's hard to say. What does Disk Manager say? You should post a screen shot of the disk in Disk Manager: In the Run Dialog box, type "diskmgmt.msc". This will paint a clear picture of the disk's partition and file structure.
Off-hand, I would say "yes" with a lot of confidence. It's probably a couple screws to take the housing apart. But to be sure, you should screen capture the drive in Disk Manager to make sure that the drive hasn't been partitioned incorrectly.
