How many sectors does a FAT1 and FAT2 copies contain

From: Ravi kumar.N (ravikumar.n_at_sunlux-india.com)
Date: 07/31/04 

Date: 31 Jul 2004 07:02:42 -0700

Dear Experts,
 
               I am writing a format program for floppy which i want
it to work as windows format utility works.I am trying to format
floppy as per FAT12 standard.According to FAT12 each FAT copies i.e.
FAT1 and FAT2 occupies 9 sectors.I want to know whether the number of
sectors occupied by each FAT copy is standarad(i mean to say is it
fixed) or is it customizable.i.e. instead of allocating 9 sectors what
happens if I allocate 6 sectors to each FAT copy.Please let me know.

   With Regards,
    Ravi kumar.N