Unstick

Eject. For real this time.

See what is stopping your drive from ejecting, and fix it.

"The disk couldn't be ejected because it is in use." Which app? macOS never says. Unstick lists your external drives and, when ejecting fails, shows exactly who is using it, with one button to close that app and eject.

Free

Requires macOS 14 or newer on Apple Silicon.