Hard disk replacement for a mid-2011 iMac - Life, the Universe and Fishing
Further Explained: Apple's iMac 2011 Model Hard Drive 'Restrictions'
2011 imac 27" 32GB - final stage of 1TB + 2TB SSD upgrade (replaced HDD & optic drive). Also cleaned out the fans and case. Running 'SSD Fan Control' & 'Macs Fan
2011 iMacs Make It Impossible For You To Upgrade Your Own Main Hard Drive | Cult of Mac