iMac won't boot from USB, white screen + … - Apple Community
Tech Tip: How to Boot and Use a Mac in Target Disk Mode
iMac Late 2009 - Bluetooth and USB keyboard and mouse do not work on Big Sur installation screen · Issue #43 · barrykn/big-sur-micropatcher · GitHub
2007-2008 IMAC I think will not boot past… - Apple Community
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Adding USB3.0 to late 2009 iMac (11,1) | MacRumors Forums
Adding USB3.0 to late 2009 iMac (11,1) | MacRumors Forums
Got a iMac Late 2009 model A1311 for a very good price, made a bootable USB drive for El Capitan and this shows up. any ideas? All help is appreciated : r/osx
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Apple iMac (Winter 2009) review: Apple iMac (Winter 2009) - CNET
2009 iMac i7 27" clean install from USB won´t boot White screen | MacRumors Forums
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Old iMac as a monitor - instructions for screen synchro »Sir Apfelot
Old iMac won't boot. Tried to boot Linux via USB, but got this awesome effect. I suspect a failing GPU. : r/techsupportgore
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MacBook Pro mid 2009 won't boot from exte… - Apple Community
2009年製 古いiMac に Monterey はインストールした結果 - オッサンLABO
Adding USB3.0 to late 2009 iMac (11,1) | MacRumors Forums
