Re: Bootable USB won't working

[Akhil Krishnan S]

># dd if=debian-8.3.0-amd64-netinst.iso of=/dev/sdb bs=4M
>$ sync
>
>Now remove the drive and try boot with it ("boot override" if
>possible). If you follow these steps to the letter, and the problem
>persists, then it is a hardware fault.

Thanks, but already followed the same. May be because of some hardware fault. 
But my question is how older versions get booted without any trouble, but newer 
versions not?