AboutDavid Anders Expertise Seattle - The Computer Guy - 15 yr veteran Mac/PC/network problem solving. Clients are design firms, artists, freelancers and photographers.
PLEASE PLEASE provide EXACT info for Mac Model and OS Version.
RAM installed - added cards - external devices - recent changes.
Do you do MONTHLY MAINTENANCE? With what Utility?
What you have tried and what result do you want.
Experience First computer experience 1969. Worked in 3 computer stores. Setup First Mac and First IBM-PC.
Expert: David Anders Date: 6/27/2008 Subject: .dmg files
Question When I upgrade my Safari and other programs from the internet, a .dmg file is downloaded to my desktop. Where does this go and what does it do? I get these files when I upgrade my ArchiCad software as well.
Answer dmg files are Disk Images. they are essentially variable size files that when opened or double clicked mount a pretend floppy or CD or other ejectable drives (Zip for instance).
The mounted pretend drive contains the software to be installed or the updates for existing software.
The software may be an installer that runs when doubleclicked or a package the is drag and dropped to the Applications folder or other location on the harddrive.
Once the install is done, the mounted diskimage is dragged to the trash icon (which changes to the eject icon) and disappears. The downloaded dmg file remains and can be doubleclicked, the disk appears again, the install can be done again, and the disk can be ejected.
