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I have two ISO files (Windows 98SE), the first file is bootable ISO, and the second is non bootable ISO.

-- What I want is (My question) --
Copy the boot files from first iso that is bootable ISO, to the second iso that is non bootable ISO.

The main objective is: how to extract the boot files from the bootable ISO?

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Your question is a bit unclear on what you're asking for. Please provide more info. in order to make it answerable. – cole Oct 11 '13 at 20:08
    
Making a ISO bookable is more then just copying files. You must alter the boot sector, and setup a boot-loader. What OS is on these disks? What tools do you have? – Zoredache Oct 11 '13 at 20:10
    
@Zoredache: The OS is windows 98SE, and I have UltraISO program. – Lion King Oct 11 '13 at 20:26

Windmills Bootable ISOs Do Not Work That Way.
It is not simply a matter of copying some files over - A bootable ISO image must conform to the El Torito specification (non-bootable images will typically not conform to this specification, and have no boot information on them).

There are some instructions floating around the net, including these using Ultra-ISO which explain how to copy the boot data from a bootable ISO onto a non-bootable one. This basically involves rewriting the ISO file (and in the case of the instructions I've linked to you would need a bootable ISO of the same OS in order to extract the boot blocks).
Similar results could be achieved with other tools.

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Is that means, I can't do that? – Lion King Oct 11 '13 at 20:37

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