The second way is to double-click the DMG file, but this will only work if DMG is not associated with another program. The first way is to import the file from within the PeaZip software using the 'Add' button. Step 2 : There are several ways in which you can open the DMG file at this point. Install the program and launch the application. Step 1: Download PeaZip 64 Bit 6.6.0 on a Windows 10 64 Bit computer. If the DMG file in question is not meant for software installation, you can use this program to view the contents of the file. It can be used to open and view archive file formats such as DMG, ISO, RAR and many more. PeaZip is a free and open-source file manager for varios types of compressed files. Part 1: Open a DMG File in Windows 10/8/7 with PeaZip Open DMG Content on Windows with UUByte DMG Editor