Dell switch S4820T Directory not accessable

Need help.I've already asked a question, and Dell has solved it perfectly. Thanks.I now have another question and hope this one can be resolved.It's the same Dell Force10 S4820T switch.When I request a list of the switch's directories, I get a list, but not a complete one.I type 'dir' and enter, and a list appears. I'm missing certain files.When I try to navigate to a directory from the list, I get a photo message (see photo).For example: cd admin_dirI get the following error message:Current user is not allowed to access the hidden directory.My question is: what should I do? I've entered my user name and password and set the permissions correctly.How can I get the hidden files to appear in the list again? I also want to remove certain directories because they contain files that mess up everything during startup.Please, I need your help. Have already looked in the technical manual.
Thanks.