I backed up important files from my old MacBook onto an external hard drive before it died. Generally, I believe there wasn't any malware on it, but after using it for so long, I'm worried. If there was malware that somehow got onto the external drive, could it infect my new MacBook when I plug it in? Is it safe to just transfer a few files without opening them? I'd like to use the external drive to save some things before I send my new laptop off for a screen repair. Can someone explain how this works in simple terms?
5 Answers
If your external drive was connected to an infected machine before, there is a potential risk. Most modern operating systems have protections that prevent auto-execution of malicious code when a drive is connected, but it's always better to be safe and avoid opening anything unfamiliar.
Yes, in theory, it is possible for malware to transfer through an external hard drive. Think of it like a virus—just because you’re not seeing symptoms doesn’t mean it’s not there. But remember, just plugging it in won't automatically spread malware unless something is executed.
Honestly, anything can happen with today's malware, so it's wise to be cautious. Make sure you're aware of the files you're transferring and scan anything before opening it, just in case!
It's generally safe as long as you don't run any executable files from the drive. Most malware needs to be activated by opening a file. Just connecting the drive won't usually trigger anything. However, be cautious with PDFs and other complex file types. Stick to images and videos, and you'll likely be fine.
Before you plug in your external hard drive, I'd recommend downloading and setting up antivirus software on your new MacBook, like AVG. Once installed, you can connect the drive and select the "USB/DVD Scan" option to check for any malware. If it comes back clean, you should be good to use the drive normally!
Exactly! The key here is that code remains harmless until it's executed. So as long as you're vigilant about what you open, your new laptop should be safe.