-B can be used to rebuild an existing
usinodes file for a volume if this usinodes file is suspected of
being corrupted. Before doing the rebuild, the following three files
have to exist in the control directory/path for the volume: usinodes,
extendedNames and trustee.sys.
This option will save the old file in the control directory
as usinodes.old and the old extended names file as extendedNames.old.
To preserve the trustee information when rebuilding the usinodes
file, it will also create a file in the same control directory called
ChangeTrustees. At NetWare startup time, this file will be used
to resynchronize the trustee file trustee.sys with the newly created
usinodes file.