Thanks for the great advice regarding dmg files. I will make sure that I don't delete dmgs for programs that I have purchased (although I may have ditched an earlier version of Lightroom now that I think about it.) But I will go through and get rid of some downloads associated with programs that I have trialed and then decided not to get.
The .mdinfo files dates coincides with when I bought my iPad so I will keep those.
I am not sure about the .myd and .myi files. I am not using a database, except for Numbers occasionally, but that wouldn't account for the files. I will have to open and see what they are. Appreciated the link as well. I will see if that will shed some light on these files as well.
Again, thanks for the great information. It's really appreciated.
Cheers,
Mary Ellyn
--- In macbook@yahoogroups.com, Glenn Gutierrez <yah@...> wrote:
>
> On 04 Sep 2010, at 3:42 PM, MaryEllyn wrote:
>
> > I was cleaning up my computer today and discovered that I have lots of dmg files. Is it OK to delete these files after the application is installed and launched on my computer? I assumed so, but just wanted to check.
>
> It depends.
>
> If it's something free and common, like a free app or update from Apple, or the latest version of Firefox, go ahead and delete. You can likely download it again if you need it.
>
> If it's software that you purchased and downloaded online, you may not be able to download it again. If you ever change computers, and you probably will, you'll really wish you hadn't deleted your only installer.
>
> I'd evaluate them, then archive a DVD-R with backup copies of the important ones.
>
>
> > also, I discovered a few file types that I haven't a clue what they are about???? They are .mdinfo, .myi, and .myd. Anyone have a clue as to what these are? And whether I can delete them.
>
> Apple uses .mdinfo to denote backup files for your iPhone or iPod Touch (and maybe the iPad?). I wouldn't delete those, unless you have a ton of older ones, and you know you won't need to revert that far back.
>
> Regarding .myd and .myi..
> http://www.fileinfo.com/extension/myd
>
> Looks like you have some stray mySQL databases hanging around. You may have an application which is using them. Check the Date Modified to see when they were last updated.
>
> Glenn
>
