Cluster count too small for FAT32
Facility: EFI$CP, The OpenVMS EFI Partition Control Program
Explanation: FAT32 has a capacity limit on the numbers of storage
allocation units (clusters), and this limit has been reached.
User Action: You must specify or utilize volumes with a larger
cluster count, or switch to a FAT structure that permits the
required number of clusters; the attempted volume structure is
beyond the lower limits of FAT32.