How to Install windows from USB???

[almighty]

Hi mates
I ve 2 GB Transcend usb drive and i wanna to install windows xp from USB.
so i copied the xp image (not the files, may be this is the mistake) in usb...
then change my bios priority to usb .
But it wont boot or dont detect any bootable disk...
am sure the image which i copied in usb is bootable coz i use it to install my xp but with cd....

can any one help me . how to install windows or ubuntu from usb....
while googling i found intall on usb not install from usb

plz help

[ranjan2001]

how did u make the image of XP? something is missing which might be making it unbootable.

Does ur mobo bios support booting from usb devices???

[Charan]

This wont work. ISO is for CD's and just copying it to a USB drive will not make it bootable.

[almighty]

^^^
so what sud i do to boot??????
my MB has option to choose the boot priority for usb....

any other file i need to add or i have to copy files in usb not the ISO???

[Charan]

You need to make the USB drive bootable first i.e., it should have boot files. After this you have to copy the XP setup files to the drive.

Now you can boot from the Drive and start the setup manually.

Check these links for help.
http://www.bootdisk.com/pendrive.htm
http://ucsu.colorado.edu/~shaher/Bootable_USB.html