External HDD still showing files and folders after erase

[435713]

I searched like mad and got no satisfactory easy to understand answers on this subject. Apparently it was everywhere but heck if I saw anything relevant so here goes:

Formatted a g-tech mini external drive using disk utility (was done correctly)

After format disk Utility reads at the bottom:
14 folders, 88 files, 448.4MB used

So what may that be? It was used as a time machine backup and also backing up other files, and I need a larger external and wanted to sell this one.

Thanks in advance if I dont get a chance to thank the person for their time. It's appreciated.

 

[Knoodles]

Completely normal.

 

[435713]

Completely normal.

Good to know that, seems to be the norm for formats on all OS's but still kind of curious as to what that data is exactly. Prob will never know

 

[chown33]

One folder is named .Trashes. Another is named .TemporaryItems. Their purpose should be plain from their names.

There's also .Spotlight-V100, for Spotlight data, and additional ones for other system purposes. The fundamental file-system structure (i-nodes, extents, etc.) also takes up space.

One could explore it with the command-line, but it's not all that interesting.

http://en.wikipedia.org/wiki/File_system
http://en.wikipedia.org/wiki/Comparison_of_file_systems

 

[435713]

One folder is named .Trashes. Another is named .TemporaryItems. Their purpose should be plain from their names.

There's also .Spotlight-V100, for Spotlight data, and additional ones for other system purposes. The fundamental file-system structure (i-nodes, extents, etc.) also takes up space.

One could explore it with the command-line, but it's not all that interesting.

http://en.wikipedia.org/wiki/File_system
http://en.wikipedia.org/wiki/Comparison_of_file_systems

Thanks. You got the names down even haha nice.

Kind of strange it doesn't delete everything on there, but I guess it is beyond my tech comprehension in this matter.