A DMG file is a proprietary disk image file format developed by Apple for its Macintosh line of computers. These are large, single files that comprise the entirety of a physical disk, such as a DVD or ...
I have no problem with having to download Lion again for each fresh install -- it happens so rarely that I can handle the inconvenience (especially once some service packs have come out, if the ...
[Editor’s note: This article is part of our series of articles on installing and upgrading to Lion (OS X 10.7). We also have a complete guide to installing and upgrading to Mountain Lion (OS X 10.8).] ...