Apt-get update and installed failed in ubuntu 13.10 in virtual machine

Question

I have installed VMplayer in my Ubuntu 14.04 and in the VM I need to run Ubuntu 13.10.

I have installed 13.10 on my VM. But in 13.10 when I need to run sudo apt-get update it failed. And also I can't run any install from apt-get. Can anyone tell me how to fix this issue? These are Errors

Err http://extras.ubuntu.com raring/main Sources                                
  404  Not Found
Err http://extras.ubuntu.com raring/main amd64 Packages                         
  404  Not Found
Err http://extras.ubuntu.com raring/main i386 Packages

and when i try to install packages using apt-get install it gives this error.

sajith@ubuntu:~$ sudo apt-get install git
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package git

Answer 1

I think 13.10 is Saucy Salamander, but your output says "raring" (for Raring Ringtail) which is 13.04. Both 13.10 and 13.04 have reached end-of-life however, see: https://wiki.ubuntu.com/Releases.

Discontinued (end of life) versions are removed from the main repositories, and that is why you get the errors. I would recommend that you upgrade to a supported version that receives security updates. If you cannot do that, then you can edit /etc/apt/sources.list to use http://old-releases.ubuntu.com instead. I don't know if the "extras" repository is available though.