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Apple Desktops Discussion of Apple's desktop machines including Mac Pro, iMac, Power Mac, and mini

iMac - Novel way of selecting boot device on iMac


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hugtheslug

 
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Member Since: Feb 19, 2008
Location: Kent, UK
Posts: 502
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Mac Specs: 2013 MacBook Air i5 13" / MacBook C2D 2.13GHz / iMac G5 iSight 1.9GHz / iMac G5 1.6 GHz / Pismo G4

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Just thought I'd share this as it took me a while to work out what was happening - iMac 17" would sometimes boot fine and other times it would come up with the boot device selection screen.

Eventually I worked out that this only happens when I have the light turned on.
It's an energy saving bulb and i think somehow it's intefering with the Mac. Also the wireless network will take longer to come up.
Changed the bulb back to an ordinary one and booting is normal.

So, if i want to start the iMac normally i have the light off, if i want to choose my boot device I turn the light on first

Cheers

Hugh
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cwa107

 
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Member Since: Dec 20, 2006
Location: Middletown, Pennsylvania
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Mac Specs: 15" MBP, Core i7/2GHz, 8GB RAM, 480GB Crucial M500 SSD

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I'll bet it has something to do with the ballast in the bulb. We often see them emitting electromagnetic interference and causing issues with tube-based monitors here at work. That's funny though, thanks for sharing!

Liquid and computers don't mix. It might seem simple, but we see an incredible amount of people post here about spills. Keep drinks and other liquids away from your expensive electronics!
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