iMac (circa 2009) Hard Drive to SSD Upgrade - YouTube
iMac Intel 21.5" and 27" (Late 2009-Mid 2010) SSD Upgrade Bundle - iFixit Store
Upgrade the Hard Drive in 2009 and Later iMacs
How-To: Now's the right time to swap your old iMac's hard drive for a fast new SSD - 9to5Mac
iMac A1225 “Core 2 Duo ” 2.8 24-Inch Early 2008 Hard Drive Replacement Service Dallas – Apple Mac Computer Repair Dallas , Laptop ,Desktop ,iMac ,MacBook iPhone iPad Data Recovery ,Virus
iMac Intel 27" EMC 2309 and 2374 Hard Drive Replacement - iFixit Repair Guide