Input Output error Windows NT setup.

I am trying to install Windows NT 3.1 on a real computer (actually a laptop). I'm booting the cdinstall from USB, and the ISO from a CD-R. But it gives the following error: BOOT: I/O error reading disk. How could I fix this?

(I did try to run Windows 98 setup on Windows XP I made a thread about that, but I already fixed that problem.)

So how could I fix the I/O error?
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