FastDMG

FastDMG is a handy tool for anyone using macOS. It’s an open-source app that replaces the default DiskImageMounter, which is used for managing disk images. You know those .dmg files you have to deal with? Well, FastDMG makes it all so much easier by letting you skip those annoying verifications and license agreements that can slow you down.

Why Use FastDMG?

If you've ever had to wait while your Mac checks a large .dmg file, you know how frustrating it can be. Disk image verification is important, but it can take ages, especially with big files. FastDMG solves this problem by running in the background just like DiskImageMounter but way faster!

Getting Started with FastDMG

To get started, just move the app to your Applications folder. After launching it, customize it however you like! When you want to use FastDMG, right-click on any .dmg file and hit Get Info, or simply click it and press ⌘I. In the Open with dropdown menu, select FastDMG and then click on Change All. Now every time you open a .dmg file, it will automatically use FastDMG!

Support for Other Formats

The cool part? FastDMG isn’t just for .dmg files! It can also handle .iso and .toast images too. Just follow the same steps to set these formats up with FastDMG.

A Smooth Experience on Older Macs

You might not see much difference if you're using a newer Mac with small files, but if you're working on an older system or dealing with larger disk images, you'll really appreciate how much quicker things go with FastDMG.

No More License Agreement Hassles!

A great feature of FastDMG is that it automatically accepts user license agreements included in many .dmg files. If you're someone who mounts tons of images every day, this little perk will save you a lot of time!

Your Background Helper

The first time you set up FastDMG is where all the magic happens; after that, it's out of sight! It runs quietly in the background like Apple's default mounter but does everything faster.

A Reliable Tool for Everyone

Download FastDMG today! Since it uses hdiutil to open files—this command-line tool comes built into macOS—you can trust it's reliable. Plus, being open-source means you can peek at the code if you're curious about how everything works.