350+ drive icons for macOS covering external drives, internal SSDs, USB sticks, NAS volumes and Macintosh HD itself. Useful when several disks are mounted at once and the default icon makes them hard to tell apart.
If you cannot see the drive, open Finder then Settings then General and tick Hard disks and External disks. Any mounted volume is also reachable from the Finder sidebar.
Choose a drive icon above and download the .icns file.
Right-click the drive and choose Get Info, or select it and press Command-I.
Drop the downloaded file onto the small thumbnail at the top-left of the Info window. For the startup disk, macOS asks for your password before it applies the change.
Yes, though macOS asks you to authenticate because the startup disk is a protected volume. Enter your password when prompted and the icon applies normally.
Yes. A custom icon is written to the drive itself, so it follows the disk to other Macs. That also means the icon travels with the drive rather than staying with your machine.
Any mounted volume can take a custom icon, including USB sticks, SD cards and network volumes. Read-only volumes are the exception, because macOS cannot write the icon file to them.
Open Get Info, click the thumbnail in the top-left corner, and press Delete. The drive returns to its default macOS icon.