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Apple Computing Products:
macOS - Desktop Hardware
What is EFI boot?
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<blockquote data-quote="dcs.79c" data-source="post: 1684911" data-attributes="member: 333068"><p>I just tried an experiment. I restarted the mini WITHOUT the bootable flash drive & only the Macintosh HD & the Recovery partition showed up in the option list. Then I plugged the bootable flash drive directly into a USB port on the back of the mini & the white circle with the "X" slid in from the right. Since that was the only thing that I plugged in & since the white circle slid in after I plugged in the flash drive, I assume that the white circle IS the flash drive. What I don't understand is why the icons & the names are different. The laptop shows the flash drive icon & the name "OS X Installer". The mini shows the white circle with the "X" & the name "EFI boot". The white circle shows up on the Desktop on both the laptop & the mini. It also shows up in Finder on both the laptop & the mini. Could it be that the laptop & the mini boot differently? The laptop is a mid-2012 MBP & the mini is a mid-2012. Why doesn't the Superdrive show up as a boot option? Every time that Apple comes out with a new version of OS X, there's something different about how it does a clean boot. I also noticed that when El Capitan boots up, the screen is white. The last version of Yosemite booted up to a black screen.</p><p></p><p>So, I'll keep my fingers crossed when I do a clean install of El Capitan.</p><p></p><p>When do the powers-that-be at Apple inform their employees about the name of the next version of OS X? It's currently 10.11. I assume that it will eventually be 10.99. At the current rate of 1 per year, it will take 87 years to get to 10.99. I won't be around at that time! I wonder if the next version after 10.99 will be OS XI.</p></blockquote><p></p>
[QUOTE="dcs.79c, post: 1684911, member: 333068"] I just tried an experiment. I restarted the mini WITHOUT the bootable flash drive & only the Macintosh HD & the Recovery partition showed up in the option list. Then I plugged the bootable flash drive directly into a USB port on the back of the mini & the white circle with the "X" slid in from the right. Since that was the only thing that I plugged in & since the white circle slid in after I plugged in the flash drive, I assume that the white circle IS the flash drive. What I don't understand is why the icons & the names are different. The laptop shows the flash drive icon & the name "OS X Installer". The mini shows the white circle with the "X" & the name "EFI boot". The white circle shows up on the Desktop on both the laptop & the mini. It also shows up in Finder on both the laptop & the mini. Could it be that the laptop & the mini boot differently? The laptop is a mid-2012 MBP & the mini is a mid-2012. Why doesn't the Superdrive show up as a boot option? Every time that Apple comes out with a new version of OS X, there's something different about how it does a clean boot. I also noticed that when El Capitan boots up, the screen is white. The last version of Yosemite booted up to a black screen. So, I'll keep my fingers crossed when I do a clean install of El Capitan. When do the powers-that-be at Apple inform their employees about the name of the next version of OS X? It's currently 10.11. I assume that it will eventually be 10.99. At the current rate of 1 per year, it will take 87 years to get to 10.99. I won't be around at that time! I wonder if the next version after 10.99 will be OS XI. [/QUOTE]
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Apple Computing Products:
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What is EFI boot?
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