I've been asked how do I make such beautiful desktop drive icons on my mac. Pretty simply, I find a picture I like, remove the back-ground and copy-n-paste into the drive I want.
I've been doing this since 1996. 18 years now. NO need for .icns, .ico, autorun.inf, hidden text files, or folder.jpeg files. On Mac OS, it is copy-n-paste. With the advent of HiDPI Retina screens, my icons are usually 500x500 pixel high resolution and they look amazing.
Sure, it is skeuomorphic but I like it.
My technique and steps are pretty simple. Google the image (preferably high-res) and remove the background. Then copy-n-paste.
Here is a visual walkthrough.
