✅ (optional, for security): shasum ~/Downloads/InstallMacOSX.dmg Should equal: b18754e5a484f5f844eea6116b670293fbde8e3b
If you have never downloaded El Capitan before, Apple provides a direct link to the App Store listing that still works: Mac Os X El Capitan 10.11.6 Installer Dmg Download
The Mac will reboot several times. The entire process takes 30–60 minutes. Mac Os X El Capitan 10.11.6 Installer Dmg Download
Apple provides the El Capitan installer as a disk image (DMG) for older machines that cannot use the App Store. Mac Os X El Capitan 10.11.6 Installer Dmg Download
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