For example, I wanted an icon of the El Capitan “X” logo for my SSD, so I searched for “os x El Capitan” and then clicked on “Search Tools” and and then “Exactly” and put in “1024” in each box. (I ...

The icon will go back to the default. It's worth noting that this isn't limited to folders. We've talked about changing Mac app icons before, and you can also edit how external hard drives look.