Select your USB drive from the left sidebar, click , and format it exactly like this:
If you are using a modern Mac running macOS Catalina, Big Sur, Monterey, or newer, the App Store may block you from downloading High Sierra. You can bypass this restriction using the Mac Terminal.
Select using the arrow keys and press Enter. download macos high sierra 10.13.6 dmg mac
To download macOS High Sierra 10.13.6 as a DMG or full installer, the most reliable method is through the official Apple Support page Mac App Store link
If you're looking for a DMG file for development or specific needs, here are some general steps, though be aware that downloading software from third-party sites comes with risks: Select your USB drive from the left sidebar,
Once your bootable media is ready, follow these steps to install the OS: Turn off the target Mac completely.
If you are planning to install High Sierra on a PC (Hackintosh) or run it in a virtualization software like VMware or VirtualBox, you may need an ISO file or a bootable DMG rather than the App Store installer. To download macOS High Sierra 10
hdiutil create -o /tmp/HighSierra -size 8000m -volname HighSierra -layout SPUD -fs HFS+J Use code with caution. Mount the newly created blank image:
Downloading is still entirely possible through a combination of Apple’s legacy support page, Terminal conversions, and trusted archiving sites. The key is to prioritize security: stick with Apple’s CDN when possible, verify checksums, and never run unsigned installer packages from random forums.
Terminal will now copy the installer files to the drive. This process can take anywhere from 10 to 30 minutes depending on your USB drive speed. Once finished, Terminal will display "Install media now available." How to Install macOS High Sierra Using the USB Drive
I can provide the specific or bypass steps for your exact situation.