"Firefox" disk image?

A disk image is a file that will open and add a pretend drive to your computer that will contain the files in the image file.

You will need to open the image .dmg file (double click on it) to mount it. Then double click on the Firefox drive icon that will appear on your desktop to open it, and run the installer/updater.

Once the update has completed you can drag the drive icon for that image to the trash to put away the image, then drag the .dmg file itself to the trash.

I installed the update earlier today but from within Firefox so it was different. What you downloaded was not just an update but the complete installer package.

An arrow arrangement of the kind you are seeing is telling you to drag the item highlighted (usually an application) to the main Applications folder on your drive in order to install an item. Because this item is on a fake drive it will not actually move it but will just copy it. Once you have copied it you close the image file as I suggested.

Hi Wayne, now you cn eject that DMg in finder, you did god, now FF in Applicatins should Launch the new version! 🙂

Hi Wayne, now you cn eject that DMg in finder, you did god, now FF in Applicatins should Launch the new version! 🙂

but:

I dragged the Firefox icon in the direction of the arrow into the applications folder icon.

Does that icon act as an alias to the real Applications folder or is it just telling you to move it to that folder (I always just dragged it to the folder so never tested that)?

The real proof in the pudding is to start Firefox from your real Applications folder and see what version it reports in menu item Firefox > about Firefox

Does that icon act as an alias to the real Applications folder or is it just telling you to move it to that folder (I always just dragged it to the folder so never tested that)?

Yep, but I too being quite anal, drag it to the Applications Icon in the Dock... lest of course I consider it a Utility! 🙂

PS. Must remember to drag the Calculator.app to the Utilities folder one of these days... lest I can find a job that requires 5+ years experience using Apple's Calculator! 😉
PS. my Utilities folder...

Cocktail 2.1
Activity Monitor
Adobe Utilities
AirPort Monitor Utility
AirPort Utility
Apple System Profiler2.
Apple System Profiler2.715
ATI Utilities
audacity-macosx-ppc-1.2.6.dmg
Audio MIDI Setup
Azureus
Back-In-Time
BatChmod
BatChmod1.3
Bluetooth File Exchange
Boot Camp Assistant
CandyBar
Chicken of the VNC
Clam Av stuff
Cocktail 4.2
ColorSync Utility
Console
Create
CronniX
Cyberduck
DasBoot
DigitalColor Meter
Directory
Disable Tiger Features
Disk Inventory X
Disk Utility
DiskWarrior3.0.2
DiskWarrior4.1
DiskWarrior4.1.1
DivX 5.2.1
Drive Genius 2
Dropbox
EasyFind
Espionage
Feedback Tools
Force Delete
GIFfun
Grab
Granet 1.3
Grapher
Help.html
HexEdit
Iconographer X 2.5
IPNetMonitorX folder
IPNetRouterX
IPNetRouterX folder
IPNetTunerX folder
Java Preferences
Keychain Access
KisMAC
level4
MacPilot 3.2.1
Magma
Migration Assistant
Network Utility
Nvu
OnyX
OpenGL Extensions Viewer
Pacifist
Pixadex
PlistEdit Pro
Podcast Capture
Preferential Treatment
PSU Blast Image Config 2.6
RAID Utility
RapidWeaver
Remote Install Mac OS X
Senuti
Share My Desktop
SharePoints
SharePoints AutoMounter
SpeedTools™ Utilities
SurplusMeter
System Profiler
Temperature Monitor
Terminal
Thecus Backup Utility
Thunderbird
Tri-BACKUP 4 (OS X)
Tri-BACKUP 5
Tri-CATALOG 6
VLC
VoiceOver Utility
Wcalc
WebTunnel
WhatSize
X11
Xupport
Xupport3.2

Hopefully I eliminated ones nobody should see! 😉

Does that icon act as an alias to the real Applications folder or is it just telling you to move it to that folder (I always just dragged it to the folder so never tested that)?

Yeah, it's a link/alias to the real folder. Quite a few app's use this shortcut these days. I know Camino (another web browser) does for instance.

Now that you have it installed in your applications folder you can put the .dmg file in the trash. Those 17.5MB were copied into the Applications folder and make the Firefox version you just ran.