Right-click on your "Macintosh HD" (or whatever you've renamed it) and take "Get Info". Leave this wondow open and we'll come back to it in a sec.
Do the right-click / get info thing on your "whatever.icns" file as well.
On the "Get Info" window of the icon you want to set as the new one click the little preview immediately to the left of the file name. Click it just once and look closely for the blue halo that surrounds it. It might be hard to see.
Here's a pic to help:
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So, you're clicking that little preview-icon where my cursor is, right? OK...
When it's selected, cmd+c. This copies the icon to your clipboard.
Now, back in the Get Info window for the Mac HD, click once to highlight (blue halo looking thing) the icon in the same place.
Now cmd+v. It will paste the icon you copied.
Close both windows. You now have a single custom icon.
There are apps, btw to replace ALL icons, but me I just want the HD icon to look like, you know... the computer it's on.![]()
Thanks, but I know how to do this. Here's the problem, when I do the get info on the .icns file I want, it does not show the little image of the file, it shows this:
