how to update old repository

1. remove /etc/apt/source.list

2. add lines as follows into source.list and change version
#vim /etc/apt/source.list

# Required
deb http://old-releases.ubuntu.com/ubuntu/ maverick main restricted universe multiverse
deb http://old-releases.ubuntu.com/ubuntu/ maverick-updates main restricted universe multiverse
deb http://old-releases.ubuntu.com/ubuntu/ maverick-security main restricted universe multiverse

# Optional
#deb http://old-releases.ubuntu.com/ubuntu/ karmic-backports main restricted universe multiverse

3.update the repositoroy

#apt-get update