Replace IMac hard drive without completely removing the LCD screen

My Problem

The system disk drive started to report SMART errors and would not allow me to upgrade the OS.

My Fix

The repair went OK. Only problem I had was trying to disconnect the temperature sensor connector for the LCD Screen. I finally decided to not disconnect the cable and instead propped up the screen while I replaced the hard drive.

My Advice

If you can't remove the LCD screen temperature cable, try propping up the display while you change the hard drive. there is plenty of room to get at the hard drive screws with the LCD screen propped up.