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Possible Duplicates:
How to install Windows 7 RC from a USB disk?
Create pendrive installer for Windows 7

I'm having trouble installing Windows 7 onto my old laptop. The problem appears to be the laptop's DVD-ROM no longer seems to work. Sucks. So, I'm trying to figure out how to get a bootable USB with my Windows 7 DVD info onto it. I found this link here on superuser.com:

http://superuser.com/questions/66948/place-a-bootable-iso-on-a-usb-drive

That looks good, except for the detail about making the USB bootable. It said that the OS you're making it bootable on must be the same as the machine you're going to be installing it on. I can't do that. The machine I would make it bootable from is a 64-bit version of Windows 7. The target machine is 32-bit. So, how's this going to work?

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marked as duplicate by Sathya, Mehper C. Palavuzlar, quack quixote Apr 19 '10 at 23:23

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

    
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You cannot install a 64 bit copy of Windows 7 on a processor which doesn't support x64. You will need a 32 bit installation source. However, it should work fine to create the flash drive installer while using a 64 bit installation, as long as your install source is 32 bit. –  nhinkle Apr 18 '10 at 3:23

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up vote 4 down vote accepted

Microsoft provides a tool for that, the Windows 7 USB/DVD Download Tool.

you can find some instructions to help here.

Worked for me pretty nice.

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