As more than 12 operating systems you can installed in your
machine.....
and i don't know What is NTFS and FAT32? you ask your syst.
admin..ok don't think much

How can you install 12 operating system?Is there any 
relation between MBR and the hard disk space?
somebody please explain 

hi friends this is suhas from pce ntfs-new technology file 
system         fat-file allocation table

if proper bootloader is installed,multiple OS can b 
installed on a machine..no specic limitation..
NTFS- new technology file sys...
FAT32- file allocation table (32bit..)
-Gurpreet Renu (PCE,Nagpur)

I would like to give the solution of the major part of the 
query that is FAT32 and NTFS:

The FAT is simply a "database" of where each file is 
physically located on the disk, so that the OS can read 
your data.  The reason that FAT went from 12-bit years ago 
to the 32-bits used today is...the larger the disk gets, 
the larger the number the FAT has to use to be able to 
access all the data.  All data on a disk is divided up into 
chunks, called clusters. 
NTFS actually stores small files in the Master File Table 
(MFT), to increase performance. NTFS and FAT32 are very 
similar in speed, but as the size of the disk increases, 
the gap widens. FAT32 offers no security whatsoever, 
whereas NTFS offers very good security. There isn't any 
argument that NTFS offers better security and reliability. 
Some also say that NTFS is more flexible, but that can get 
rather subjective depending on the situation and work 
habits, whereas NTFS superiority in security and 
reliability is seldom challenged.

This type of question should ask only for system 
administrator not for testing engineer...., if the testing 
engineer know about the difference between fat32 and NTFS 
then it will help in future, suppose for network 
testing..., either we should not disagree this question may 
be this question for network testing engineer Right...! 
Because this is basic concept eveybody should know about 
this... my suggestion is if any body don't mind, please 
follow the Saurabh mishra's answer .....