Does MalwareBytes scan External HDDs too?


Sep 1, 2013
Hello, yesterday I got a virus on my computer despite Norton saying the download was safe. Anyways I reformatted my HDD and reinstalled Windows on my PC. But I noticed during the whole process, my external HDD was plugged in. I downloaded a trial of MalwareBytes and pressed the 'scan' button in the bottom right side. (I don't know how in-depth this scan is) but it only took about 5 minutes and said I was clean and had no malware. But did it scan the external HDD too? and I've never had a virus before until yesterday, even after they are removed, are there long-term effects?