What does the failure in FAT32 "Missing file's first cluster number" mean?

Question

FAT

As I understand it, 2 situations are possible here:
1) there are zeros in the file descriptor in the field of the first cluster
2) there is information about the first cluster in the descriptor, but there are zeros in the FAT table for this number (the cluster is free)
There are some other options, or I misunderstood everything?

Answer 1

everything is right