u need 4 Gb pen drive
what u need to do just format pen drive.
in default allocation size ...and Run CMD as adminstartive use ...know type dvd drive name like your windows 7 is in H: drive then type this H: and het enter
now type cd boot
and again het enter
now type bootsect /nt60 F: ( this is pen drive path) now again enter and ur pen drive is bootable copy windows 7 all file from dvd to pen drive enjoy...
In short
c:\user\xyz> H: (ur windows dvd path)
H:\cd boot
h:\boot>bootsect /nt60 F: ( this is pen drive path)
Copy dvd to pen drive
