user59370: Is it possible to keep many currencies (Bitcoin, Monero...) on one USB drive? If not, how can I setup USB Cold Storage for Bitcoin and Monero?

user132451: Neither currencies nor coins are stored anywhere but at addresses out on the blockchain.
You may be talking about the secrets that give authority to send / spend those assets?
Seed Recovery phrases, passwords, PIN codes, private keys, master extended keys...
These are just data, text and/or numbers.
So of course millions of such data can be stored on a USB.
"Cold storage" just means, not needed for spending, kept away from any devices capable of connecting to a network, no wifi no bluetooth. Could be on a USB, or written on a paper or steel sheet kept in a safe deposit box.
Then you have the "wallet" data files or proprietary backup files as used by some client software, or a hardware wallet device.
In order to get good advice, please rephrase your question so we have more detail about your situation and just what you are trying to accomplish.

59370: <p>Is it possible to keep many currencies (Bitcoin, Monero...) on one USB drive? If not, how can I setup USB Cold Storage for Bitcoin and Monero?</p>
 132451: <p>Neither currencies nor coins are stored anywhere but at addresses out on the blockchain.</p>
<p>You may be talking about the <strong>secrets</strong> that give authority to send / spend those assets?</p>
<p>Seed Recovery phrases, passwords, PIN codes, private keys, master extended keys...</p>
<p>These are just data, text and/or numbers.</p>
<p>So of course millions of such data can be stored on a USB.</p>
<p>&quot;Cold storage&quot; just means, not needed for spending, kept away from any devices capable of connecting to a network, no wifi no bluetooth. Could be on a USB, or written on a paper or steel sheet kept in a safe deposit box.</p>
<p>Then you have the &quot;wallet&quot; data files or proprietary backup files as used by some client software, or a hardware wallet device.</p>
<p>In order to get good advice, please rephrase your question so we have more detail about your situation and just what you are trying to accomplish.</p>
