as an update,
I was never able to delete com.apple.alf.plist
because my preferences folder was invisible. My folders went from preferences panes to printers with no preferences in between. This is the way my machine came from apple. When I searched with spotlight for that file, no file was returned.
I used the recovery partition and reinstalled 10.8.2
After I reinstalled the system using recovery, I went right to that area to try to see it. At first preferences was where I expected it to be after the reinstall, then it moved to another location out of alphabetical order, then it disappeared altogether again, and later I was able to see it in its expected location.
After deleting that file and restarting I now have two files:
file://localhost/Library/Preferences/com.apple.alf.plist
file://localhost/Library/Preferences/com.apple.alf.plist~orig
I tried to change permissions again on the hard drive icon and on the home folder, and it seems like I have been able to do that for now.
Does this behavior suggest a problem I can correct? Does the alf.plist tilde orig need to be there?
Can anyone tell me what is going on?
I am far from expert, does this suggest an EFI problem?
Message was edited by: k155