I'm using Ubuntu 15, and I'm trying to get Ubuntu 16. I was getting some 404 errors with sudo apt-get update, so I already looked into threads such as these
404 failed to fetch package https://stackoverflow.com/questions/30316812/ubuntu-apt-get-unable-to-fetch-packages
I resolved the errors by editing the /etc/apt/sources.list file so it looks like
###### Ubuntu Main Repos
deb-src http://old-releases.ubuntu.com/ubuntu/ wily main restricted universe multiverse
###### Ubuntu Update Repos
deb http://old-releases.ubuntu.com/ubuntu/ wily-security main restricted universe multiverse
deb http://old-releases.ubuntu.com/ubuntu/ wily-updates main restricted universe multiverse
deb-src http://old-releases.ubuntu.com/ubuntu/ wily-security main restricted universe multiverse
deb-src http://old-releases.ubuntu.com/ubuntu/ wily-updates main restricted universe multiverse
###### Ubuntu Partner Repo
deb http://archive.canonical.com/ubuntu wily partner
deb-src http://archive.canonical.com/ubuntu wily partner
###### Ubuntu Extras Repo
#deb http://extras.ubuntu.com/ubuntu wily main
#deb-src http://extras.ubuntu.com/ubuntu wily main
However, when I try sudo do-release-upgrade, I get 404 errors such as
...
Err http://old-releases.ubuntu.com wily-updates/restricted i386 Packages
404 Not Found
Err http://old-releases.ubuntu.com wily-updates/universe i386 Packages
404 Not Found
Err http://old-releases.ubuntu.com wily-updates/multiverse i386 Packages
404 Not Found
...
Error authenticating some packages
It was not possible to authenticate some packages. This may be a transient network problem. You may want to try again later. See below for a list of unauthenticated packages.
apt-xapian-index
libboost-graph-parallel1.58.0
libboost-mpi-python1.58.0
libboost-mpi1.58.0
virtualbox
virtualbox-qt
how do I fix this?
sudo do-release-upgradeagain, but I get the same 404 errors – user5739619 Oct 17 '16 at 03:25archivetoold-releasesin/etc/apt/sources.list– user5739619 Oct 17 '16 at 03:28