NTFS allows much Fragmentation,while compared to FAT32

fat is unsecure ntfs is secure

The major diff. between FAT and NTFS is security, If you
have FAT partition then Security and Quota tap will not
available.
You can convert FAT to NTFS file system from convert command
in windows xp.

FAT has 2 types Fat16 and FAT 32. that is define the 
allocation of track and sector.  it is fix. but in ntfs we 
can allot the size of sector.

fat is unsecure ntfs is secure

" Fat stands for File Allocation Table
" There are two categories in Fat File System
o Fat 16
o Fat 32
" In Fat Up To Folder Level Security is available
" Compression Option is not available
" Encryption Option is not available
" Disk Quota Option is not Available
" FAT Supported By All Of The Microsoft Based Operating 
System

NTFS

" NTFS stands for New Technology File System
" There are three categories in NTFS file System
o NTFS 4.0 - NT O/S
o NTFS 5.0 - 2000 O/S
o NTFS 6.0 - 2003O/S
" In NTFS Up-to File Level Security is available
" Compression Option is available
" Encryption Option is available
" Disk Quota Option is Available
" NTFS Supported By only Limited Microsoft Based Operating 
System

NTFS
1) allows access local to w2k,w2k3,XP,win NT4 with SP4 & 
later may get access for some file.
2) Maximum size of partition is 2 Terabytes & more.
3) Maximum File size is up to 16TB.
4) File & folder Encryption is possible only in NTFS.
FAT 32
1) Fat 32 Allows access to win 95,98,win millenium,win2k,xp 
on local partition.
2) Maximum size of partition is up to 2 TB.
3) Maximum File size is up to 4 GB.
4) File & folder Encryption is not possible

FAT:

Fat mainly for the Floppy disk drives.
It has limitations like it cannot be used for CD R DVD-R 
It doesnot have defect management. So cannot be used for CD-
RW DVD RW

NTFS:
more secure.More availability.Encryption folders are allowed

UDF:(Universal Disk Format)
used for CD DVD

Fat stands for File Allocation Table
" There are two categories in Fat File System
o Fat 16
o Fat 32
" In Fat Up To Folder Level Security is available
" Compression Option is not available
" Encryption Option is not available
" Disk Quota Option is not Available
" FAT Supported By All Of The Microsoft Based Operating 
System

NTFS

" NTFS stands for New Technology File System
" There are three categories in NTFS file System
o NTFS 4.0 - NT O/S
o NTFS 5.0 - 2000 O/S
o NTFS 6.0 - 2003O/S
" In NTFS Up-to File Level Security is available
" Compression Option is available
" Encryption Option is available
" Disk Quota Option is Available
" NTFS Supported By only Limited Microsoft Based Operating 
System

NO.

Microsoft know that certain words have been reserved from 
the DOS days.....And you can't create a folder using these 
names below:
CON
LPT1
A: to Z:
AUX
PRN
COM1
NUL

are some of the ones I know of...

No,We cannot create the folder name CON.

It’s pretty simple, Con is a reserved name from the early
days from DOS, it stands for the “CONSOLE” I/O device, Since
it is already used by the system. If we create one with some
evil tricks then the system will get confused. There will be
an ambiguity.

yes it is possible...........

I can create con foldear in windows......

Do apply this Tips.....

Right Click on the folder
New
Folder
Alt+255
Fill con
Enter
Your Folder will be create on the windows.

dynamic memory allocation is the allocation of memory
storage for use in a computer program during the runtime of
that program. It can be seen also as a way of distributing
ownership of limited memory resources among many pieces of
data and code.

Dynamically allocated memory exists until it is released
either explicitly by the programmer or by the garbage
collector. This is in contrast to automatic and static
memory allocation, which have a fixed duration. It is said
that an object so allocated has a dynamic lifetime.

Deadlock Prevention:

Preventing deadlocks by constraining how requests for resources can be 
made in the system and how they are handled (system design).
The goal is to ensure that at least one of the necessary conditions for 
deadlock can never hold.
Deadlock Avoidance:

The system dynamically considers every request and decides whether it is 
safe to grant it at this point,
The system requires additional apriori information regarding the overall 
potential use of each resource for each process.
Allows more concurrency.
Similar to the difference between a traffic light
and a police officer directing traffic.

1. reason – the control blocks for processes are larger 
than for threads (hold more state information), so the 
amount of information to move during the thread switching 
is less than for process context switching
2. reason – the major reason is that the memory management 
is much simpler for threads than for processes. Threads 
share their memory so during mode switching, memory 
information does not have to be exchanged/changed, pages 
and page tables do not have to be switched, etc. This makes 
the thread context switch much cheaper than for processes. 
In case of processes the memory pieces (pages) need to be 
exchanged, etc. (Will talk about the details in few weeks).
3. reason – threads do not have to worry about accounting, 
etc, so do not have to fill out all the information about 
accounting and other process specific information in their 
thread control block, so keeping the thread control block 
consistent is much faster
4. reason – threads share files, so when mode switch 
happens in threads, these information stay the same and 
threads do not have to worry about it (similar to 
accounting information) and that makes the mode switch much 
faster.

Process :Generally heavy weight by, the PCB holds kernel
objects the values generally referred as state information.

A application can be divided into two types in design phase:

1.Process - may affect application/program architecture
2.Threads - didn't affect architecture

Threads typically are spawned for a short-term benefit where
as process for long-term even the thread share its own
process address space is never larger than 4GB.

A single process may hold "n" threads so exchanging value
between process; then the cpu spend most of its time for
swapping it leads to thrasing definitely.


Threads easily exchange their locale variables within its
scope but exchange value between process stolen more cpu cycles.

macintosh

OS 10.5 Leopard

ShowWindow

ShowWindow(hWnd,SW_HIDE);

The FAT File system is used by DOS and is supported by all 
the other operating systems. It is simple, reliable, and 
uses little storage

FAT is used by the operating system to keep track of which 
clusters are allocated to specific files and which are 
available for use.

File Allocation Table

The FAT File system is used by DOS and is supported by all 
the other operating systems. It is simple, reliable, and 
uses little storage