Forum Discussion
How Can I Create Bootable USB for Mac OS X Mountain Lion?
I have encountered similar problems before, and I want to install the system on an old Mac. To create a Mountain Lion boot disk on Windows, UltraMDG is a good choice. You just need to download this tool, plug in the Mountain Lion installation package and 8GB USB drive you have prepared, and then use UltraMDG to write the boot disk.
I followed this guide and succeeded!
https://www.howtogeeker.com/make-macos-bootable-usb-on-windows
Compared with other complicated methods, this tool saves a lot of trouble, I recommend you to try it!
Yes, that's a reasonable approach if you can't borrow a legacy Mac that supports create a bootable USB for Mac OS X Mountain Lion. Downloading the Mountain Lion DMG file and using dedicated disk imaging software to burn it to a USB drive is a viable alternative.
I have encountered similar problems before, and I want to install the system on an old Mac. To create a Mountain Lion boot disk on Windows, UltraMDG is a good choice. You just need to download this tool, plug in the Mountain Lion installation package and 8GB USB drive you have prepared, and then use UltraMDG to write the boot disk.
I followed this guide and succeeded!
https://www.howtogeeker.com/make-macos-bootable-usb-on-windows
Compared with other complicated methods, this tool saves a lot of trouble, I recommend you to try it!
Kareemiy wrote:The old Mac OS X Mountain Lion installer app won't run on a modern Mac. In fact, you can create a Mountain Lion bootable USB on any Windows PC by creating a El Capitan virtual machine.
First, download El Capitan ISO image and the free VirtualB0x software. After installing you'll create a new virtual machine, selecting "Mac OS X" as the type and "El Capitan" as the version. Allocate the appropriate amount of RAM and disk space based on your system's resources and the requirements of El Capitan. Typically, 4GB of RAM and 40GB of disk space should suffice. When prompted, use the ISO file of El Capitan as the startup disk.
Finally, there are some additional configurations required to get macOS running smoothly This includes modifying the settings via command prompt to ensure compatibility. These settings might involve enabling EFI and adjusting the CPU configuration.
This sounds interesting. I didn't expect that you can create a bootable USB for Mac OS X Mountain Lion in a virtual machine on Windows. But you mentioned that you need to use the command prompt to modify the settings to make macOS run smoothly. Is this a bit complicated? For example, how to adjust the EFI and CPU configuration? I'm a little afraid of making mistakes. Are there any other details that need special attention?
