Results 1 to 2 of 2
  1. #1

    hugtheslug's Avatar
    Member Since
    Feb 19, 2008
    Kent, UK
    11" MacBook Air / Unibody MacBook / iMac i3 21.5" / iPhone SE
    Talking Novel way of selecting boot device on iMac
    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



  2. #2

    cwa107's Avatar
    Member Since
    Dec 20, 2006
    Lake Mary, Florida
    15" MBP, Core i7/2GHz, 8GB RAM, 480GB Crucial M500 SSD
    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!

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Troubling selecting boot-up disk
    By parasbuy in forum Apple Notebooks
    Replies: 4
    Last Post: 11-27-2014, 10:22 PM
  2. IMac will not boot Mac OS from any device, just Windows XP
    By Joannes01 in forum macOS - Operating System
    Replies: 10
    Last Post: 01-10-2012, 05:22 PM
  3. PC user switching, need help selecting an iMac
    By waduncan in forum Apple Desktops
    Replies: 7
    Last Post: 12-29-2010, 04:12 PM
  4. eMac won't boot - gets hung at "Got boot device"
    By johngriggs in forum Apple Desktops
    Replies: 10
    Last Post: 04-13-2010, 11:15 PM
  5. Selecting and dragging.. sometimes I end up selecting all
    By expatgirl in forum Switcher Hangout
    Replies: 1
    Last Post: 03-17-2009, 03:49 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts