: If you must use a mirror, ensure you verify the file. High Sierra 10.13.6 (Build 17G66) has a known MD5 hash of 7e7af6a6ef939b95fa42cc0f53927a11 for verification. Trusted community archives include: macOS High Sierra 10.13.6 on Archive.org
Google Drive may limit the download speed or show a “Download quota exceeded” message for popular files. Here are a few workarounds:
sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/USB download mac os high sierra 1013 6 dmg google drive work
Press the Power button and immediately . Release the key when you see the Startup Manager screen.
Because Apple updated its security certificates, launching an older installer may trigger an error stating "This copy of the Install macOS High Sierra application is damaged and can't be used to install macOS." To bypass this certificate issue: : If you must use a mirror, ensure you verify the file
For users comfortable with command-line tools, the softwareupdate command can fetch the full High Sierra installer directly from Apple’s servers.
This standard error happens because the security certificate packaged inside older macOS installers has expired. This standard error happens because the security certificate
If your Mac is compatible with High Sierra and running macOS 10.8 or later:
Before risking a third-party Google Drive download, attempt to pull the official file directly from Apple. Apple hosts legacy installers outside the standard App Store search interface.
Right-click the folder and select . Google will zip the folder and bypass the file's individual traffic restriction. How to Create a Bootable USB Installer
, which can download macOS firmware and create bootable drives automatically. On Windows