Mac OS X High Sierra 'root' security bug: What it is and how to fix it | Macworld
CPU Upgrades So 2007 iMacs Can Run High Sierra | Low End Mac
Apple iMac 21.5" - QUAD CORE - 8GB RAM - 2TB - THUNDERBOLT - macOS High Sierra | eBay
iMac "Core 2 Duo" 2.4 20" (Al) Specs (Mid-2007, MA877LL, iMac7,1, A1224, 2133): EveryMac.com
Apple iMac 21.5-inch Mid-2011 2.5GHz Intel Core i5 (MC309LL/A) – UNICOM, Inc.
Amazon.com: Bootable DVD DL for Mac OS X 10.13 High Sierra Full OS Install Reinstall Recovery Upgrade
iMac (Mid 2007) | Low End Mac
macOS Sierra Patch Tool
How to Install macOS High Sierra - iFixit Repair Guide
How to Prepare Your Mac for macOS High Sierra - The Mac Security Blog
How to Install macOS High Sierra - iFixit Repair Guide
How to Clean Install MacOS High Sierra | OSXDaily
Apple iMac 21.5 inch All-in-One - (Mid 2011) macOS High Sierra Installed | eBay
How to Install macOS Catalina on an Unsupported Mac - MacRumors
Macs Able to Run macOS Sierra Remain Compatible With High Sierra - MacRumors
How to install macOS High Sierra on a Unsupported Mac (iMac 7,1 2007 Model) - YouTube
Installing High Sierra on a 20-Inch Mid 2007 iMac - YouTube
Apple iMac 21.5in 2.7GHz Core i5 (ME086LL/A) All In One Desktop, 16GB Memory, 1TB Hard Drive, MacOS 10.12 Sierra (Renewed)
Identify your iMac model - Apple Support
Identify your iMac model - Apple Support
Common Problems During and After macOS High Sierra Installation
