At the moment, I cannot see the scan option with Norton for my usb drive. Need to check it. However, there is another way you can do it. Open the Norton product Click Settings In the Computer Settings window, next to Computer Scans, click Configure. In the Scans window, click Create Custom Scan. In the Norton product scan wizard window. Norton Antivirus enables you to perform a quick scan, full scan and a custom scan of your computer system for vulnerabilities. Special Features Combining the most necessary features into one software, Norton Antivirus boasts antimalware, antivirus, phishing protection and the filtering of email spam.
Your Norton device security product automatically updates virus definitions and regularly scans your PC for a range of threats. If you have been offline, or suspect that you have a virus, you can manually run the following:
Norton Scan Tool
Quick Scan to analyze areas of your computer that are most vulnerable to threats.
Full System Scan to analyze your entire system including less vulnerable applications, files, and running processes than those checked during a Quick Scan.
Custom Scan to analyze individual files, folders, or drives if you suspect that they are at risk.
After you install your Norton product, the first scan may take an hour or more to analyze your entire system.
Norton Free Scan And Clean


Run a Quick Scan, Full System Scan, or Custom Scan
Open your Norton device security product.
If you see the My Norton window, next to Device Security, click Open.
In the Norton product main window, double-click Security, and then click Scans.
In the Scans window, next to Scans and Tasks, select one of the following:
Quick Scan > Go
Full System Scan > Go
Custom Scan > Go, then click Run next to Drive Scan, Folder Scan, or File Scan to navigate to the components that you want to scan.
In the Results Summary window, click Finish.
If there are items that require attention, review the risks in the Threats Detected window.
Need more help?
The Norton Power Eraser tool is only compatible with computers running Microsoft Windows operating systems. It does not work with computers running on WinPE, Mac OS X, Android devices, and iOS devices.
Norton Power Eraser is a free virus removal tool that can be downloaded and run to remove malware and threats from your computer. You don't need to install this tool.
Depending on your operating system, select one of the following:
Some applications can install unwanted toolbars and can cause browser redirection. Norton Power Eraser provides an unwanted application scan option to scan your computer for potentially unwanted programs (PUP) and potentially unwanted applications (PUAs). For more information, read Run an Unwanted Application scan in Norton Power Eraser.

