The INDEXF command is used to analyze ,defragment ,truncate or extend the
 INDEXF.SYS file. The analyze option reports the current fragmentation
 state, whereas the defragment and extend option allows defragmentation
 or pre-extending of INDEXF.SYS. Truncate is an option which trims
 down INDEXF.SYS to the end-of-file size.
 To perform a defragment truncate or extend
 operation the disk must be completely dismounted.
 NOTE: defragment truncate and extend require VOLPRO privilege.
     : defragment truncate and extend can not be done on the system disk.

 Syntax :

    INDEXF <device>/Qualifiers