How do I make sure that the Yosemite icon for the Time Machine Disk on my desktop shows the updated version and not the Mavericks version?
Edit: There is nothing wrong here.



Under /Volumes/, there are two type of mounted volumes associated with Time Machine:

First is the hard drive the backup sits on. If you use Time Capsule, the hard drive inside is by default called Data. Because it's access through network, the volume in the picture has a Shared Disk icon. If you use an external drive through USB, the volume would have a USB/External icon.

Inside, there is a file with name like Someone's Macbook Something.sparsebundle. When backing up, Time Machine would mount this file and create /Volumes/Time Machine Backups. This volume is covered with Time Machine icon, and it only appears with TM is running. The name cannot be altered as far as I know

My conjecture is that Budda in question is a volume of a hard drive, not the mounted volume of the sparsebundle. Like other files, volumes can have its icon changed through Get Info window, which is probably why a generic disk got a TM icon in the first place.

Cut and paste the new icon from the location below, and you will have this resolved.

/System/Library/CoreServices/CoreTypes.bundle/Contents/Resources/