When you plug the device in, your dmesg will get a few lines added to it. Your console will get blue/white kernel messages. Your /var/log/messages will have them too.
Read them. You might discover the device is sd2 instead of sd1. But until you take the time to see what device is actually attached, or not attached and why, all we can do is make conjecture.
Once you have confirmed you have a correctly attached device, you may then attempt to inspect it with fdisk(8) and disklabel(8).
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