Hi,
That doesn't explain some of my own findings - the numbers don't add up. In my system, if only the startup disk is mounted and a single file is placed in the Trash, a secure-delete progress window will show four items being deleted.
Just mounting an additional external volume will add two items to the apparent number of items being secure-deleted for each such volume added, even though no files on the additional volumes are placed in the Trash to begin with.
Here are the tests I did.
Start with a text file that is on the DeskTop.
For each test:
1) duplicate the text file
2) move the duplicate copy to the Trash
3) secure-empty the Trash,
4) repeat step 1
5) repeat step 2
6) repeat step 3
Steps 1-3 were done to be sure the Trash folders were truly empty before performing the actual test in steps 4-6.
To be determined:
In step 6, after that single file has been placed in the startup volume's Trash, how many items does the secure-delete progress window show as being deleted?
Results:
In my system, if the test is run with no disk volumes other than the startup disk mounted, the secure-delete progress window shows four items being deleted.
If I run the test after first mounting a single external volume, then the secure-delete progress window shows six items being deleted. Again, just one file was in the Trash after step 5, the same as for the first test.
If I mount a second external volume and repeat the test, again with only a single file in the Trash after step 5, the secure-delete progress window now shows 8 items being deleted.
If I first mount all 15 of my external partitions and run the same test, again with a single file in the Trash after step 5, the secure-delete progress window shows 34 items being deleted!