I'm trying to retrieve data from an old MacBook.
I've removed the hard drive, put it into an external enclosure, and connected it to my current MacBook.
This is the structure of the drive in Disk Utility:
I'm trying to access Macintosh HD, but when I turn the hard drive on only Recovery HD mounts. (Although I'm not able to eject it.)
I've tried mounting it manually and running First Aid.
Disk Utility sees how big the drive is, and how much of it is used, which gives me some confidence, but other than that I'm stumped.