apt archives in ram

[sergio <mailbox@sergio.spb.ru>]

Сделал так:
% cat /etc/apt/apt.conf.d/00directories 
Dir::Cache::archives "/tmp/apt-archives";

Как исправить 
% sudo apt-get update                  
E: Archives directory /tmp/apt-archives/partial is missing. - Acquire (2: No such file or directory)
?

-- 
sergio.