ok this is my first post so please bear with me

i am in the process of encrypting all my drives so i put all my files that i wanted backed up on my new 4TB drive that i just bought and encrypted with LUKS.

i used the whole drive

when i mount it some files i could read and some i could not, this was a pain as i would watch shows off it as i was encrypting my old drives.

so i had the not so brillant idea as to chmod 764 to the directory i had the drive mounted to. i retrospect i think i shouldve use the chown command, my bad, lol.

but now the problem i am faced with is everything seems to be a file so i cant browse the drive

http://i1296.photobucket.com/albums/...ps4ed8aa72.png

i looked at it in a terminal and there is no permissions for anything just a bunch of question marks

http://i1296.photobucket.com/albums/...ps1d796adf.png

now my question is can i reverse these permission to what they used to be from a command, like undo-chmod, lol
or how do i get the folders to go back to being browsable like normal

i was considering photorec but i have never used it and my source drive is 4TB and all my other drives are 2TB

any help on the matter would be appriecated as i do not want to loose these files that i have spent 10+ years acquiring


[UPDATE]

i solved my problem
i had to open a root terminal and use chown - R <username> <directory_where_drive_mounted> and i also used chgrp - R <username> <directory_where_drive_mounted>
after i did that i found that the permissions were actually applied like i initailly wanted

Let me just explain something here: You cant descend into a directory without 'execute' permission.
So you could also just have done "chmod -R 755 <directory_where_drive_mounted>"

Try the find command with the -d option. That should only list directories. I'm to loaded to check the web or manpage but something like that could help.
The command is wrong but the manpage of find is great and has lots of examples. Check it out.