How to create a Bootable PenDrive?

there 2 options:
1. windows 7 usb-dvd download tool.
2. basic option.

1. windows 7 usb-dvd download tool:
download tool , installed in desired pc follow easy steps:-

2. basic option:
tools required:
1. usb flash drive minimum capacity of 4 gb.
2. windows 7 setup dvd.
step 1 : plug-in usb flash drive.
step 2 : open powershell (or command prompt if powershell not exist). if using windows 7/vista open administrator rights*.
* goto start -> programs -> accessories ->windows powershell -> right-click on “windows powershell” , select “run administrator”.
step 3: in powershell, type
diskpart

start microsoft diskpart utility shown below:

issue following command:
list disk

show list of available disks on system. disk 0 hard disk. in case, disk 1 usb drive (this can different 1 in case). issue command shown below:

select disk 1

above command, 1 usb drive number on system. if have different number on system, need replace 1 number.
step-4: issue following list of commands 1 one shown below:

clean
create partition primary
select partition 1
active
format fs=ntfs quick
assign
exit


close power shell , proceed next step.
step 5: insert windows 7/vista installation disc , note down “drive letter” of dvd drive. in case, “h:”.


open command prompt. if using windows 7/vista open administrator rights*.
* goto start -> programs -> accessories -> right-click on “command prompt” , select “run administrator”.

type following list of commands shown below:
h:
cd boot
bootsect.exe /nt60 g:(note:
g: usb drive letter)

exit

step-6: copy contents of windows 7/vista installation disk usb flash drive.
directly copy-paste dvd file usb stick then…

usb stick ready boot , install os you. don’t forget enable “usb boot” option , change “boot priority usb device hard disk” in bios settings.

i using windows vista. first how many gb pendrive need buy , how make pendrive bootable using windows vista. there command had in dos format a: /s make floppy disk bootable (and transfer system files) in old dos days.

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