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We use external FW/USB drives as portable diagnostic and installers and even though the partitions are named and have a custom icon, they show up as "Mac OS X" with a generic USB/FW icon when option booting.

How do I make the names and icons "stick" so they appear as I named them?

In System Preferences I've tried setting a partition as the startup disk and restarting when prompted; no change.

My current drive is formatted GUID and is broken into 9 partitions when viewed in Disk Utility. 8 are bootable and 1 is not. The retail partitions are the DVD installers or the Mac App Store Installers used to re-image new hard drives. The diagnostic partitions are a working OS with diagnostic utilities (DiskWarrior, Drive Genius, etc.) installed.

  • 10.5.6 - Retail
  • 10.6.3 - Retail
  • 10.7.4 - Retail
  • 10.8.1 - Retail
  • 10.5.8 - Diagnostic
  • 10.6.8 - Diagnostic
  • 10.7.4 - Diagnostic
  • 10.8.1 - Diagnostic
  • Storage

Option Boot

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Is the computer on which this shot was taken running 10.8.1? – duci9y Sep 18 '12 at 7:29
I can't remember what machine this was booted on. I have multiple machines on which I can test. – ivonesh Sep 19 '12 at 1:04
Just post a screenshot of what it looks like on a machine with 10.8.1. – duci9y Sep 19 '12 at 6:54
This image is drawn by the boot manager is firmware code and depends on the Mac and firmware level only as OS X hasn't been loaded yet. – bmike♦ Sep 19 '12 at 12:25

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