“The file that you are downloading is an Apple “.dmg” disk image file. Once the download has finished, you will need to double-click on the file. This will launch Disk Copy to create a virtual disk on your desktop. You will then need to double-click on that virtual disk to open it, then double-click on the installer application that you see in the window.” Then, of course, you must eject the disk image, delete the installation files, and check to make sure the software is actually installed as advertised. I know this DMG business is supposed to be the most reliable way to deliver software for Mac OS X, but really, does it need to be so contorted? Can’t someone write a script to launch the files, install the software, and dispose of the detritus? Or am I just whining at 2:30 a.m.?
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Replies: 3 comments so far
You’re just whining. ;-)
.dmg files are pretty handy in my view, afford you complete control, etc. Once in a while, I might wish for something like the way Windoze does this—i.e., let Redmond do my thinking for me—and then I catch a whiff of oxygen and come to my senses.
posted by Greg Hammond at 09:10 a.m. on tuesday, march 19, 2002
Good point. For people who want total control, .dmg files are great. For people who don’t want total control, Apple or the software vendor should include a few sentences about ejecting images that look like floppy drives (which Apple doesn’t make any longer) and trashing files (which have extensions average users don’t often see on their hard drives). I don’t want anyone to think for me, but I would like enough clear and concise information so I know what to think about. “Think different,” in other words.
posted by Kawika at 07:12 p.m. on tuesday, march 19, 2002
I haven’t written instructional copy in almost a year. Eventually, I want to write for money again. For the moment, I thought I’d try my hand at writing generic instructions for downloading software that uses the “.dmg” extension. Then I’d look it up on a website to see what Omni Group, a company I admire, does. Here’s the test:
INSTRUCTIONS…
To install this software…
- Click this link once. You will be downloading a file to your computer. The file ends with the extension “.dmg.”
- When the download is complete, double-click on the icon. Your computer will verify the integrity of the file and open an image of a removable disk.
- Double-click on that image. Inside is an icon of your software program,
- Drag the software program’s icon to your Applications folder, which may take a moment or two to complete.
- Click on the disk image once and eject it.
- Drag the “.dmg” file to your Trash, and then empty it.
- If you choose, drag the icon of your new program from the Application folder to your Dock, where it will remain for your use.
You have installed the software, removed unnecessary files from your computer, and created a shortcut to the program. Enjoy.
INCLUDED IN THE DISK IMAGE…
To install this software, drag the icon below to your Applications folder. You can then “eject” the disk image, throw away the “.dmg” file, and empty your Trash.
OMNI GROUP’S INSTRUCTIONS…
Installation Instructions
- Click the icon above of the file you want to download.
- Wait until the download is complete. If your web browser and system are properly configured, Disk Copy will launch to open the downloaded disk image. (Stuffit Expander may also launch if the file is compressed.) If not, see below.
- A new Finder window will appear containing the icon of your new OmniWeb application ? simply drag this icon to your Applications folder (or whatever other folder or disk you’d like to store it in) to install.
- Once OmniWeb is installed, you can safely “eject” the virtual disk it came on (and dispose of the .dmg and/or .gz file you downloaded if you choose). Double-click the OmniWeb icon in its new location to begin using it, or drag it to your Dock for easy access.
*If Disk Copy (or StuffIt Expander) doesn’t automatically open when your download completes, follow these steps:
a.Find the file you just downloaded. It will usually be saved to your desktop, with a name like OmniWeb-4.1.dmg or OmniWeb-4.0.6.dmg.gz.
b.If the file’s name ends in “.gz”, drag and drop this its icon onto the icon of the StuffIt Expander application, which lives in your /Applications/Utilities folder. You’ll then get a disk image file (“.dmg”) on your desktop.
c.Double-click this image to open it in Mac OS X’s Disk Copy application, which will mount it as a virtual disk and open a new folder on this virtual disk.
If you need additional assistance unpacking and installing OmniWeb, please send mail to OmniWeb support.
posted by Kawika at 12:12 p.m. on wednesday, march 20, 2002