Alternatively, if your Mac doesn’t have a DVD drive, you may consider making a macOS USB in Windows. For this file size you need a dual-layer (8.5 GB) DVD. The macOS High Sierra and Catalina DMG files have a size around 5.8 and 8 GB. Press the Option key and select the listed DVD as your installation source.Once you write InstallESD.DMG file to DVD on Windows, load it to a Mac and start it.Find the DMG file loaded on the left side, right-click on it and choose to burn it to DVD.Click on the File tab at the top, and select the option “Open Disk Image” to load macOS installer DMG file to the software.Run Transmac app as administrator, by right-clicking on its icon.Now, download and install TransMac version 12 (15-day trial) for Windows 10 from this link.Install the free Windows application 7-ZIP ( download) to extract and locate InstallESD.DMG, which includes all files to form a bootable macOS DVD.You could also find a copy from the Internet. In the video we use OS X 10.8 Mountain Lion downloaded from the Mac app store.( Check below for macOS High Sierra and Catalina) However, the procedure is somewhat the same if you download a compatible macOS High sierra or Catalina in DMG format for creating a USB disk on a PC. Here we use an old version of Mac OS, Mountain Lion, to make a bootable macOS DVD. Let’s start with the process of burning a Mac OS X installer in DMG format (InstallESD.DMG) to a DVD in Windows environment. Steps to burn DMG file to a bootable macOS DVD in Windows Eventually, I restored my iMac to OS X 10.8 using the same DVD as macOS installation disc. Later, I found a way to burn macOS DMG file to a bootable DVD on my Windows laptop. The only option left for me was buying an OS X Lion Installer disc as the Internet Recovery required a lot of bandwidth and time. I accidentally formatted the hard disk of my iMac and lost the recovery partition in the process. My first experience with burning a DMG file to DVD was actually on Windows, back in 2013, when Mountain Lion was the operating system. A macOS installation package with DMG extension enables creating bootable installer DVDs. Therefore, it is possible to mount a DMG file on a virtual disk or write it to a DVD and access its contents.

DMG is a disk image format for Mac just like an ISO file in Windows.

Burn dmg image on pc