invalid FAT32 volume cluster factor Facility: EFI$CP, The OpenVMS EFI Partition Control Program Explanation: Per EFI FAT specifications, no FAT32 volume can offer less than 65525 clusters, and this volume is outside the valid range. The FAT volume is apparently corrupted. User Action: Reinitialize the FAT32 volume with a smaller cluster size; with a cluster factor within the required range, or reinitialize the volume using FAT12 or FAT16.