Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I am using Xubuntu 11.10 on old laptop with Pentium M and 1GB RAM. Please tell me, how to clear ureadahead cache, so I can build an "index" of files again, I would like to improve my system boot time, which takes about 1 minute.

share|improve this question
up vote 2 down vote accepted

You probably mean ureadahead.

If so, remove any pack files in the /var/lib/ureadahead directory.

share|improve this answer
Exactly! I was wrong, I mean ureadahead of course. Sorry about that, and thanks for solution! – pioruns Nov 13 '11 at 13:33
Besides debugfs, I've home.pack and pack in /var/lib/ureadahead. Did you mean "any pack files" was *pack? Or *.pack? – BornToCode Jan 21 '14 at 9:45

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.