(Documentation for the BASIC Mode=EFAT menu)

Mode=EFAT Menu: [Enhanced-FAT, huge SD/removables]

Allocation map display

Display a pseudo-graphical map of used versus free sectors in the filesystem

Menu item screenshot(s)

    Display a usage map for the currently selected disk or filesystem

    A pseudo-graphical map of the disk or partition allocation is
    displayed, showing the distribution of data over the object

    This is also an indication for the amount of unused sectors in
    the object, that are beneficial to 'SMART-SECTOR' optimizations
    in imaging and cloning operations.

    The percentage of used sectors are displayed as a percentage at
    the end of the line, and a total usage percentage and size is
    shown just after the map itself.

    For filesystems that support resizing, the limits for resizing
    are shown after the map itself.

    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    Press <F1> again for more help; Some options may require switching to 'Expert mode'

   

Set Standard Volume Label

Display/Edit the standard 11-character label (in bootsector and ROOT DIR)

    This will present a small dialog to display and/or edit the
    standard (DIR) label, with a maximum length of 11-characters
    and located in the ROOT directory

    This standard label is used to identify the filesystem in
    commands like DIR and FORMAT

    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    Press <F1> again for more help; Some options may require switching to 'Expert mode'

   

Set Volume Serial Number

Change the volume serial number, making this volume unique (after clone :-)

    This will update the 'volume serial number' in the bootsector

    This could be REQUIRED for some operating systems after cloning
    a filesystem, to make sure the volume serial numbers are unique.

    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    Press <F1> again for more help; Some options may require switching to 'Expert mode'

   

Fix Bootsector from Spare

Fix bootsector area (LSN 0..11) by replacing it from spare area (LSN 12..23)

    This will repair a broken EFAT bootsector (area) by replacing it
    with the spare-copy found at LSN 12 (0xC).

    This can be very useful when the bootsector got damaged by a virus
    or a crashing program (writing to sector 0) or if the partition was
    deleted by accident using FDISK or LVM and recreated again.

    The menu item is implemented using the 'bootsync -s' command, and
    in that process it will also recalculate the boot-area CRC values.

    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    Press <F1> again for more help; Some options may require switching to 'Expert mode'

   

Reset bad sectors

Reset the bad-sector administration to show ZERO bad-sectors or clusters

    This will check for bad-sectors being present in the
    filesystem and when present, reset to NO bad sectors.

     FAT:   Reset all 'BAD' values in the FAT to FREE
     EFAT:  Reset all 'BAD' values in the FAT to FREE
     NTFS:  Update $BadClus and $BitMap to reset bad-clusters
     HPFS:  Make the bad-sector-list in the spare-block empty

    This can be very useful after cloning or imaging a partition
    or disk that includes bad-sectors to a new replacement one.

    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    Press <F1> again for more help; Some options may require switching to 'Expert mode'

   

Set EFAT status Clean

Update EFAT status in BOTH bootsector areas to indicate filesystem is CLEAN

    This will update the fileystem-status field in the EFAT bootsector
    to indicate that filesystem is CLEAN.

    The primary (LSN 0..11) and SPARE boot area (LSN 12..23) are updated.

    This can be useful to avoid an automatic CHKDSK after a system-crash

    Note: The filesystem itself is NOT cleaned in any way, it is just the
          statusflag that is modified.

    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    Press <F1> again for more help; Some options may require switching to 'Expert mode'

   

Set EFAT status Dirty

Update EFAT status in BOTH bootsector areas to indicate filesystem is DIRTY

    This will update the fileystem-status field in the EFAT bootsector
    to indicate that filesystem is DIRTY.

    The primary (LSN 0..11) and SPARE boot area (LSN 12..23) are updated.

    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    Press <F1> again for more help; Some options may require switching to 'Expert mode'

   

Analyse EFAT filesystem

Check filesystem for inconsistencies and errors (Readonly, no fixing!)

    This will perform a CHECK of the filesystem, somewhat like the
    well-known CHKDSK but without automatically fixing anything.

    The result of the check is a sector-lookup-table (SLT) that contains
    information about all recognized filesystem areas that are in use.

    Any error recognized will be flagged in the default display of
    this SLT that is performed automatically by the CHECK command.

    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    Press <F1> again for more help; Some options may require switching to 'Expert mode'

   

Reselect whole disk, FDISK

Unselect filesystem, reselect the same/first disk; enables Mode=FDISK menu

    This will UNSELECT the current object/filesystem, and reselect a
    whole physical disk, either the same disk as the partition was on,
    or the first disk present in other cases.

    This is a quick way to change to 'Mode=FDISK' and work on
    disk-level issues

    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    Press <F1> again for more help; Some options may require switching to 'Expert mode'

   

Views: 617030

Created by Jan van Wijk:   Aug 2007, last update:   23-Oct-2022