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Apple Computing Products:
macOS - Desktop Hardware
What is EFI boot?
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<blockquote data-quote="cradom" data-source="post: 1684902" data-attributes="member: 305283"><p>When you boot with Option held down, you're not running a full system, just enough to put up a menu. </p><p>The computer therefore doesn't know from icons or names yet. All it knows is there is a drive that's bootable so it puts it up as an option.</p><p>No idea why sometimes it knows what the name is and sometimes it doesn't. Possibly has to do with when you hit Option and how much system is loaded.</p><p>Since Macs boot from an EFI partition that's what it names it. EFI Boot.</p><p>Unless you have something else plugged in that's bootable, it's the flash drive.</p><p>Why you're getting a "NO" symbol when doing a get info I don't know. Try checking the drive with Disk Utility.</p></blockquote><p></p>
[QUOTE="cradom, post: 1684902, member: 305283"] When you boot with Option held down, you're not running a full system, just enough to put up a menu. The computer therefore doesn't know from icons or names yet. All it knows is there is a drive that's bootable so it puts it up as an option. No idea why sometimes it knows what the name is and sometimes it doesn't. Possibly has to do with when you hit Option and how much system is loaded. Since Macs boot from an EFI partition that's what it names it. EFI Boot. Unless you have something else plugged in that's bootable, it's the flash drive. Why you're getting a "NO" symbol when doing a get info I don't know. Try checking the drive with Disk Utility. [/QUOTE]
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Apple Computing Products:
macOS - Desktop Hardware
What is EFI boot?
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