I decided to reinstall ubuntu because of many problems that I can't fix. I have a home partition that is encrypted. If I reinstall ubuntu can I access to /home and how to do it. I don't know the partition has been encrypted or the home directory but it was during installation that ubuntu asks to encrypte it.
/home
partition for the installing system, but not format it. That way it will automatically set up fstab etc. to automount the partition at boot time. This is the case for unencrypted partitions! I have no idea how it handles the encryption!file:///usr/share/doc/ecryptfs-utils/ecryptfs-faq.html#protectkey
on your system