If the USB flash drive doesn’t work with TransMac, you could still be facing an issue of partition. Steps to Create GPT Partition on a USB flash drive Once the process comes to an end, put the USB flash drive on your Mac PS to reinstall, install, or ugrade the OS to macOS’s newest version, which could be Sierra or above. Step 13: Now click “Open” > “OK” > “Yes’ to make the macOS USB bootable media. dmg file with the installation files of macOS. Step 12: Now on the right, click the button that says browse, and find the. Step 11: Click “yes” to erase the data on the flash drive when you get the warning message. Step 10: Next, right click on the flash drive of the USB, choose “Restore with Disk Image.” Step 9: Click “OK” to continue when the formatting finishes. Step 8: Now proceed further by clicking “Yes.” Step 7: Give some name to the drive and click “OK.” For example, you could name it “macOS bootable USB.” I hope I can show you some examples of how to configure the EFI using Open core.Step 6: Click “Yes” on the warning message when prompted to continue formatting. Wait until the process is completed.Īfter this process completes, you are ready to configure the EFI folder. Press Enter and then it will start copying files to our USB drive.
Next, we need to provide the path for the macOS recovery file we downloaded on step 1.Ĭlick Copy path as shown above and then paste in the command line Now confirm it by typing Y and press enter This will also install OpenCore on the USB drive.
Don’t forget to change the number based on your USB drive number shown on the makeinstall window. In this case, my Sony USB drive is shown with a number 3. In the following window, make sure you see your USB drive. Now, right-click the file “MakeInstall.bat” and choose Run as Administrator. And then open the gibMacOS folder once again. Plug your USB drive to one of your USB ports.
OK so the second step of this project is completed. This will download the macOS Catalina 10.15.4 to the gibMacOS folder.Īfter the download process is completed, you will see new folder called macOS Download under the gibMacOS folder To proceed, simply type 5 and then press Enter. Now we are going to choose the macOS Catalina Full Install from the list. Type R and then press Enter to enable the Recovery option only.
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