HI Pat, From Wikipedia: A file with the extension .dmg (an abbreviation for disk image) uses a disk image format commonly found on Mac OS X. The format allows secure password protection as well as file compression and hence serves both security and file distribution functions. Its most common function is the distribution of software over the Internet. When opened, DMG files are 'mounted' as a drive within the Finder. From: Wikipedia .cdr and ISO ISO image Filename extension .iso Uniform Type Identifier public.iso-image Type of format Disk image Standard(s) ISO 9660 An ISO image is an archive file (a.k.a. disk image) of an optical disc using a conventional ISO (International Organization for Standardization) format that is supported by many software vendors. ISO image files typically have a file extension of .ISO but Mac OS X ISO images often have the extension .CDR. The name 'ISO' is taken from the ISO 9660 file system used with CD-ROM media, but an ISO image can also contain UDF file system because UDF is backward-compatible to ISO 9660. Carolyn 🙂 Message was edited by: Carolyn Samit
Mar 18, 2014 To convert an ISO to DMG and vice versa, you could purchase a couple of utilities at $4.99 each or do it yourself in just a few seconds. How to convert.iso to.dmg and.dmg to.iso on OS X.
Hi, Apparently, there are two ways to convert disk images in CDR format to ISO format: 1. Rename diskimage.cdr to diskimage.iso Or 2. Hdiutil makehybrid -iso -joliet -o diskimage.iso diskimage.cdr The first method is really quick while the second method takes quite a long time.
DMG file is a compressed file format being used widely on Mac computer. Windows OS doesn't natively support DMG disk image files, so if you need to create a bootable USB drive from a DMG file, mostly for bootable Mac OS X or macOS installation USB, you need a special utility to help you complete the task. Sep 18, 2012 I have Mac OS X installation newbie questions. Can I mount DMG file to install Mac OS X cleanly and directly to VMware Fusion (v4.1.3 and v5.0.1) or do I really have to burn it to a disc? I am using a Mac Mini with updated 64-bit 10.7.4. I did not see any options to do that like I can do with ISO files in Windows' VMware Workstations.