Chosen Solution
Hello, I recently installed a new hard drive into my iMac computer. This is an older model, believe its a 2011. I am using a Corsair K95 keyboard, and everytime I try to power on the mac it goes white screen then a grey folder appears with a ? inside. I have tried using Alt, control, and windows key, with combination of the “R” key. No clue why this isn’t working, any suggestions would be amazing.
The drive needs to be formatted and a system put on it. You will also need an OWC thermal sensor to prevent facing fan. To give you more specific information we need to know what it actually is. Look on the bottom of the stand for that information. Right now I don’t even know what size it is. Here’s guide on the 2011 21.5” iMac Intel 21.5" EMC 2428 Hard Drive Replacement
