disk_error/71_DIRECTORY_ERROR                     disk_error/71_DIRECTORY_ERROR
 
 NUMBER
     71

 MESSAGE
     DIRECTORY ERROR

 DESCRIPTION
     The BAM (Block Availability Map) does not match the internal count. 
     There is a problem in the BAM allocation or the BAM has been overwritten 
     in DOS memory. To correct this problem reinitialize the disk to restore 
     the BAM in memory. Some active files may be terminated by the corrective 
     action.