what is ".dmg"? And how do I access file?

[Scarlett Mardis]

what is ".dmg." and how do I access the file?

 

[Emma-lee]

.DMG is a mac os X disk immage file.

 

[bbyckz.]

Thnaks for the reply. But please explain further what a disk image is and how it is used.

If I have a .dmg file, how would I open it to use it???

Thanks.