For hackers who wants to do penetration testing or some extra in hacking den Backtrack5 is a good choice...
First u need to download backtrack5 from this link-->> http://
nd also download UNetbootin which is required--> http://
Now requirement :
1. USB (Flash Drive) (Minimum USB Drive capacity 4 GB)
2. Backtrack 5 ISO file, md5sum verified(which is available on above link)
3. UNetbootin
now procedure to burn your USB.
> Plug in ur USB Drive
> Format the USB drive to FAT32
> Start Unetbootin and select the "diskimage" option, choose a BackTrack 5 ISO file which u've downloaded at d first of dis tutorial.
> Select the amount of space to use for persistence in MB
> Select your USB drive and click "OK" for creating a bootable BackTrack USB drive
> Once rebooted, remember that the default username and password are root/toor.
**now ur USB is ready to install BackTrack5...
first of all Boot the Backtrack Live Environment.
now at the bash prompt, type startx to enter the GUI.
Double click the install Backtrack.sh which u can see on d Desktop.
**now step by step Installation process...
Select the language and click on the forward button.
Select ur geographical location and time zone den click on the forward button.
Choose ur keyboard layout, or leave default.
now in d next screen choose the "Erase and use the entire disk" option and click Forward.
d next screen will show you the installation options, make sure everything is fine den click on forward button to start installation process.
when installation will finish u'll need to press the restart button and than enjoy Backtrack5.
NOTE : default user name is : root nd pass : toor
Dont forget to change it...
u can also use BackTrack 5 wid diff operating systems like Win XP, Win 7,etc wid dual boot setup.