HOW TO MAKE PENDRIVE BOOTABLE for xp,7,8... without any software --> 1:- Put your Pendrive to your computer... 2:- Type in Run "Diskpart" and hit the enter... 3:-Then type "listdisk" and hit the enter.. 4:- Then type "Select disk 1 or 2 means which is your pendrive...thenselect disk 1 if your pendrive is in 1..etc.. 5:- Then type "clean" and hit the enter.... 6:- Then type "create partition primary" and hit the enter... 7:- Then type "Active" and press the enter... 8:-Then type "format fs=fat32 quick" and press the enter... 9:- Then type "assign" and hit the enter.... Now you copy your window files from cd/dvd or from storage divice..all window file. your pendrive is ready. just start installing your window