Try LiveCD before update
Before making an update to new version it could be a good approach to download an ISO, to make a LiveCD and try that new distribution works in LiveCD mode well on your hardware.
If you already have installed Linux Mint 15 and want just to update your current installation to latest version do the following (but always backup any critical data even before proven update operations).
Replace distro codename in sources.list files
raring => saucy and
olivia => petra
$ sudo sed -i 's/raring/saucy/' /etc/apt/sources.list $ sudo sed -i 's/olivia/petra/' /etc/apt/sources.list $ sudo sed -i 's/raring/saucy/' /etc/apt/sources.list.d/official-package-repositories.list $ sudo sed -i 's/olivia/petra/' /etc/apt/sources.list.d/official-package-repositories.list
These are 2 required files, but if you had installed some PPA or repos review them manually in
/etc/apt/sources.list.dfolder and do the same.
Then run update
$ sudo apt-get update && sudo apt-get dist-upgrade $ sudo apt-get upgrade
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