With your internal drive successfully prepared, you can now deploy the fresh operating system.
hdiutil convert /path/to/installer.dmg -format UDTO -o /path/to/output.iso
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: To run macOS High Sierra as a guest OS in VMware, VirtualBox, or Parallels, you need an ISO or DMG file. macos high sierra 10136 dmg install
Once the installer boots, select Disk Utility . Choose your internal main hard drive and click Erase (select APFS or Mac OS Extended (Journaled) depending on your drive type).
Type date 071212002018 and press (this resets your system clock to July 12, 2018, when the certificate was active). Quit Terminal and restart the installation process. The USB Drive Does Not Appear in Startup Manager
Exit Disk Utility and select Install macOS . Follow the on-screen prompts to complete the setup. Troubleshooting Common Issues With your internal drive successfully prepared, you can
macOS High Sierra (10.13) was released in 2017. The final, most stable version is 10.13.6 . Apple no longer officially offers it on the App Store for modern Macs, but it remains critical for older Macs that can’t run Mojave or later.
: Right-click the drive again, select Restore with Disk Image , and choose your High Sierra DMG file. 3. System Requirements Ensure your hardware is compatible before proceeding:
Known as one of the most stable macOS releases for 2010–2017 Macs. Choose your internal main hard drive and click
: For older Macs that cannot use the App Store, Apple provides direct disk image (.dmg) downloads for legacy versions on their legacy installer page. Phase 2: Create a Bootable USB Installer
If your Mac is compatible, you can use the official Apple Support link which will redirect you to the Mac App Store download page.
key during startup. Select "Install macOS High Sierra" from the list of bootable drives. Format the Drive: Disk Utility to format your target drive as (for SSDs) or Mac OS Extended (Journaled) (for older HDDs). Run the Installer:
You will need a USB flash drive with at least of capacity. On a Mac: