VMS Help ANALYZE, /DISK_STRUCTURE  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    The Analyze/Disk_Structure utility checks the readability and
    validity of Files-11 Structure Level 1 and Structure Level 2 disk
    volumes, and reports errors and inconsistencies.

    You can detect most classes of errors by invoking the utility
    once and using its defaults.

    Format

      ANALYZE/DISK_STRUCTURE  device-name:[/qualifier]

    device-name

    Specifies the disk volume or volume set to be verified. If
    you specify a volume set, all volumes of the volume set must
    be mounted as Files-11 volumes. For information on the Mount
    utility, refer to the OpenVMS System Management Utilities
    Reference Manual.

1 - Qualifiers

    Qualifier           Description

    /CONFIRM            Determines whether ANALYZE/DISK_STRUCTURE
                        prompts you to confirm each repair

    /HOMEBLOCKS         Erases damaged home blocks on an initialized
                        volume.

    /LIST[=filespec]    Determines whether ANALYZE/DISK_STRUCTURE
                        produces a listing of the index file

    /OUTPUT[=filespec]  Specifies the output file to which ANALYZE
                        /DISK_STRUCTURE writes the disk structure errors

    /READ_CHECK         Determines whether ANALYZE/DISK_STRUCTURE
                        performs a read check of all allocated blocks
                        on the specified disk

    /RECORD_ATTRIBUTES  Determines whether ANALYZE/DISK_STRUCTURE
                        repairs files containing erroneous settings
                        in the record attributes section of their
                        associated file attribute block (FAT)

    /REPAIR             Determines whether ANALYZE/DISK_STRUCTURE
                        repairs errors that are detected in the file
                        structure of the specified device

    /USAGE[=filespec]   Specifies that a disk usage accounting file
                        should be produced, in addition to the other
                        specified functions of ANALYZE/DISK_STRUCTURE

2 - /CONFIRM

    Determines whether the Analyze/Disk_Structure utility prompts you
    to confirm each repair. If you respond with Y or YES, the utility
    performs the repair. Otherwise, the repair is not performed.

    Format

      /CONFIRM

      /NOCONFIRM

3 - /HOMEBLOCKS

    Erases home blocks from a volume whose home blocks were not
    deleted during previous initialization operations.

    Format

      /HOMEBLOCKS

4 - /LIST

    Determines whether the Analyze/Disk_Structure utility produces a
    listing of the index file.

    Format

      /LIST[=filespec]

      /NOLIST

5 - /OUTPUT

    Specifies the output file to which the Analyze/Disk_Structure
    utility is to write the disk structure errors.

    Format

      /OUTPUT[=filespec]

      /[NO]OUTPUT[=filespec]

6 - /READ_CHECK

    Determines whether the Analyze/Disk_Structure utility performs
    a read check of all allocated blocks on the specified disk.
    When the Analyze/Disk_Structure utility performs a read check,
    it reads the disk twice; this ensures that it reads the disk
    correctly. The default is /NOREAD_CHECK.

    Format

      /READ_CHECK

      /NOREAD_CHECK

7 - /RECORD_ATTRIBUTES

    Determines whether the Analyze/Disk_Structure utility repairs
    files containing erroneous settings in the record attributes
    section of their associated file attribute block (FAT).

    Format

      /RECORD_ATTRIBUTES

8 - /REPAIR

    Determines whether the Analyze/Disk_Structure utility repairs
    errors that are detected in the file structure of the specified
    device.

    Format

      /REPAIR

      /NOREPAIR

9 - /STATISTICS

    Produces statistical information about the volume under
    verification and creates a file, STATS.DAT, which contains per-
    volume statistics.

    Format

      /STATISTICS

10 - /USAGE

    Specifies that a disk usage accounting file should be produced
    in addition to the other specified functions of the Analyze/Disk_
    Structure utility.

    Format

      /USAGE[=filespec]