| Requirement | Specification | |--------------|----------------| | | 16 GB or larger (32 GB recommended for modern macOS versions) | | DMG File | Contains the full macOS installer (e.g., Install_macOS_XXX.dmg ) | | Host Mac | Any Mac running macOS 10.12 or newer | | Backup | All data on the USB drive will be erased |
If you have access to a working Mac, using native system tools like Terminal or Disk Utility is the most reliable method. Option A: Using the Terminal ( createinstallmedia )
(Replace sdX with your actual USB drive identifier, such as sdb or sdc . Writing to the wrong drive will erase your data). How to Boot Your Mac from the USB Installer
(Replace diskX with your disk identifier, e.g., disk2 )
Now we will use the createinstallmedia command, which is built into the macOS installer app extracted in Step 2. Open Terminal.
If you see an app named something like Install OS X Yosemite or Install macOS Sierra , drag that file directly into your Mac's folder.
sudo dd if=/path/to/your.dmg of=/dev/rdiskX bs=1m status=progress
sudo /Applications/Install\ macOS\ VersionName.app/Contents/Resources/createinstallmedia --volume /Volumes/Untitled Use code with caution.
Leading oil companies have used our pipe systems for more than 40 years to transport oil, gas (LPG, LNG) and fuels. As a result, our pipes are used and prove their reliability every day at over 25,000 filling stations and tank facilities.