empty .dmg file

I have a file with a .dmg extension. When I check it in Disk Utility, it says it has 11 files, totaling 10.9MB. However, when I mount this image, it shows no files.

I opened the image on my Win7 PC using 7-ZIP and I was able to open the file and see the contents. The contents are:

.fseventsd
.Trashes
.HFS+ Private Directory Data
[]
.com.apple.timemachine.supported - 0 bytes
.journal - 8,388,608 bytes
.journal_info_block 4,096

All files have a time stamp of 2008-10-08. I'm trying to recover the contents for my Mom. I seems that .journal has the content I need to but how can I retrieve it?

Thank you.

On a Mac. .DMG os Mac only, as .exe is Windows only.
Double click it on a Mac and it will unstuff.

Kevriano said:

On a Mac. .DMG os Mac only, as .exe is Windows only.
Double click it on a Mac and it will unstuff.

Click to expand...

I double clicked it on my MacBook Pro. I shows as a device in finder, but when I click on the device, it shows it as empty as no file are displayed. The entire .dmg file is about 104 megs and I guess the contents within it total about 10.9 megs according to disk utility.

So it mounts as a HD icon on the desktop? This is what it should do, and then within that HD icon should be the software or whatever it is it's supoosed to contain.
If it's not there I suspect it's corrupt.

Notice all the filenames except [] begin with a . (period). On a mac this is an invisible file. That's why you cant see anything.
Try renaming the file you want, changing the . and you should see the file.