Macos Sierra 1012 Dmg File Install !!better!! — Download
Press the button while holding down the Option (Alt) key.
From the macOS Utilities screen, select (or Reinstall macOS ) and click Continue . Click through the software license agreement terms.
Copy and paste the following precise command string exactly into the terminal line window to call Apple's built-in createinstallmedia tool: download macos sierra 1012 dmg file install
Error: "This copy of the Install macOS Sierra application is damaged"
Open and enter: sudo /Applications/Install\ macOS\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install\ macOS\ Sierra.app (Replace "MyVolume" with your USB drive's name) . Press the button while holding down the Option (Alt) key
Set the Name to SierraUSB (or any temporary name without spaces). Set the Format to . Set the Scheme to GUID Partition Map . Click Erase and then click Done . Using Terminal to Create the Bootable Drive
Once you have successfully created your bootable USB installer using either method: Copy and paste the following precise command string
Visit the official Apple Support page for older macOS versions. Locate the download link.
Disconnect your Mac from the internet (unplug ethernet and turn off Wi-Fi) so it cannot auto-sync its time.