Checking package manager
Reading package lists: Donegutsy-security/multiverse Packages: 75 6
Reading state information: Done
Reading state information: Done
Reading state information: Done
Invalid package information
After your package information was updated the essential package 'ubuntu-minimal' can not be found anymore.
This indicates a serious error, please report this bug against the 'update-manager' package and include the files in /var/log/dist-upgrade/ in the bugreport.
Restoring original system state
Aborting
Reading package lists: Donesarge/contrib Packages: 97 ackages: 97 2
Reading state information: Done
Reading state information: Done
Reading state information: Done
user@ubuntu:~$
I have ecxact the same problem as Raj Saini..
Network upgrade.
Done downloading
Checking package manager security/ multiverse Packages: 75 6
Reading package lists: Donegutsy-
Reading state information: Done
Reading state information: Done
Reading state information: Done
Invalid package information dist-upgrade/ in the bugreport.
After your package information was updated the essential package 'ubuntu-minimal' can not be found anymore.
This indicates a serious error, please report this bug against the 'update-manager' package and include the files in /var/log/
Restoring original system state
Aborting
Reading package lists: Donesarge/contrib Packages: 97 ackages: 97 2
Reading state information: Done
Reading state information: Done
Reading state information: Done
user@ubuntu:~$