15-09-2021

Diskimagemounter

Diskimagemounter Not Opening
Diskimagemounter Not Working
Diskimagemounter Mac Not Working

It's called 'DiskImageMounter' and it is the default program for opening '.iso' files. First navigate to the folder that has the '.iso' file you would like to mount. Next, right (secondary) mouse click on the file and select 'Open With - DiskImageMounter' Next, you should now see the software installation package mounted on your desktop. DiskImageMounter is the utility that handles mounting disk images in Mac OS X, starting with version 10.3. Like BOMArchiveHelper it has no GUI when double-clicked.

DiskImageMounter
Stable release
Developer(s)	Apple Computer
Operating system	Mac OS X
Type	Disk image emulator
Website	www.apple.com

DiskImageMounter is the utility that handles mounting disk volume images in Mac OS X, starting with version 10.3. DiskImageMounter works by either launching a daemon to handle the disk image or by contacting a running dæmon and have it mount the disk.

Like BOMArchiveHelper, DiskImageMounter has no GUI when double-clicked; doing so does nothing. The only GUI the program ever displays is a window with a progress bar and mount options (cancel or skip verification) or an error report if it could not mount the image. It is found in /System/Library/CoreServices/DiskImageMounter.app.

Starting with version 10.7, Apple 'removed double-click support for images using legacy metadata.'^[1] DiskImageMounter will not be able to open .img (NDIF only), .smi (self mounting), .dc42 (Disk Copy 4.2), and .dart (DART) disk image formats that was previously supported in version 10.6 and earlier.

Image formats supported[edit]

DiskImageMounter supports a variety of disk image file types:^[2]

Apple Disk Image (.dmg, com.apple.disk-image)
UDIF disk images (.udif, com.apple.disk-image-udif); UDIF segment (.devs, .dmgpart, com.apple.disk-image-udif-segment)
self mounting image^{[nb 1]} (.smi, com.apple.disk-image-smi)
DVD/CD-R master image (.toast, .dvdr, .cdr, com.apple.disk-image-cdr, com.roxio.disk-image-toast)
disk image segment (dmgpart)^[2]
raw disk image (OSTypes: devr, hdrv, DDim, com.apple.disk-image-raw)
PC drive container (OSTypes: OPCD, com.apple.disk-image-pc)
ISO image (.iso, public.iso-image)
sparse disk image (.sparseimage, com.apple.disk-image-sparse, .sparsebundle)

As of macOS 11.0, support for the following formats has been removed:

Disk Copy 4.2 disk image^{[nb 1]} (.dc42, .diskcopy42, com.apple.disk-image-dc42)
DART disk image^{[nb 1]} (.dart, com.apple.disk-image-dart)
NDIF disk image^{[nb 1]} (.ndif, .img, com.apple.disk-image-ndif); NDIF disk image segment (.imgpart, com.apple.disk-image-ndif-segment)

Notes[edit]

^ ^a^b^c^dMac OS Classic legacy disk image format supported by DiskImageMounter under Mac OS X versions 10.3—10.6^[1] As of version 10.9, hdiutil can still convert these formats but unable to open or write them, and version 11.0 removed all support.

References[edit]

^ ^a^b'hdiutil(1) Mac OS X Manual Page'. Apple Inc.Archived from the original on June 25, 2014. Retrieved September 3, 2014.
^ ^a^b/System/Library/CoreServices/DiskImageMounter.app/Contents/Info.plist

See also[edit]

Disk Copy - this program's predecessor.
hdiutil - command line tool counterpart that ships with macOS
FastDMG - free alternative replacement for DiskImageMounter

Retrieved from 'https://en.wikipedia.org/w/index.php?title=DiskImageMounter&oldid=1006109616'

'Replaces the system default DMG mounting application; is better in every way.'
- Some Guy on the Internet

FastDMG is a free macOS utility to mount .dmg and other disk images quickly, without any unneeded nonsense. It is a very fast and reliable alternative to Apple's annoying DiskImageMounter. And yes, that icon is a reference to After Dark's Flying Toasters screensaver on Classic MacOS.

Features

Doesn't waste your precious time verifying disk images
Auto-accepts annoying end user license agreements
Runs in the background (doesn't show up in the Dock)
Displays no windows or menus and stays out of your way
Multithreaded, can concurrently mount several images
Disk image document icons continue to look the same
Handles all disk image types supported by DiskImageMounter (dmg, iso, toast, etc.)

FastDMG is actually a minimal wrapper around the hdiutil command line tool that ships with macOS and therefore uses Apple's private DiskImages framework indirectly.

I've personally used FastDMG for many years and it works really well. It's solid, free, open source software and has a home on GitHub. If you like it, feel free to make a donation.

Download

⇩ Download FastDMG 1.0.2 (~1.4 MB, Universal ARM/Intel 64-bit, 10.9 or later)

How to use