/STRUCTURE=(header=keyword,partition=digit,volume=keyword)

    Determines the specifics of the structure.

    Qualifier Not Yet Implemented.

    HEADER     GPT       reserved for MBR-GPT header creation
    HEADER     MBR       Creates an MBR-format partition header
    HEADER     NONE      No partition header is created; the entire
                         volume is used.
    PARTITION  digit     Specifies a partition entry; a digit between
                         zero and four inclusive
    VOLUME     EFI       Creates an EFI-typed FAT volume
    VOLUME     FAT       Creates a natively-typed FAT volume
    VOLUME     DIAGNOSTIC reserved

 EFI$CP> INITIALIZE DVA0: "HELLO"
 EFI$CP> MOUNT DVA0: HELLO
 %EFI-I-SEEKMBR, searching for Master Boot Record
 %EFI-I-ONEPART, single-partition volume; no Master Boot Record partitioning
 %EFI-I-SEEKBPB, searching for BIOS Parameter Block
 %EFI-I-SEEKBPBOK, valid BIOS Parameter Block detected
 %EFI-I-MOUNTED, FAT volume HELLO has been mounted
 -EFI-I-NOPARTITION, the target volume is not partitioned
 %EFI-I-MOUNTED, FAT volume HELLO       has been mounted

 EFI$CP> INITIALIZE DVA0: ""
 EFI$CP> MOUNT DVA0:/OVERRIDE=ID
 %EFI-I-SEEKMBR, searching for Master Boot Record
 %EFI-I-ONEPART, single-partition volume; no Master Boot Record partitioning
 %EFI-I-SEEKBPB, searching for BIOS Parameter Block
 %EFI-I-SEEKBPBOK, valid BIOS Parameter Block detected
 %EFI-I-MOUNTED, FAT volume NO NAME     has been mounted
 -EFI-I-NOPARTITION, the target volume is not partitioned