USB Safely Remove puts its own icon in the System Tray in place
of Windows’ remove icon. When it can’t safely close a drive, it
shows you what processes are causing the problem and gives you the
opportunity to close them.
USB Safely Remove has other cool features, too. You can rename
your USB devices, set up a hot-key to stop a particular device, and
set autorun options. If you don’t want one more autoloading
program, you can turn off the “Run on Windows startup” option and
launch USB Safely Remove only when you need it–that is, when
Windows won’t otherwise let you safely remove a drive.