Problem upgrading from 6.06.2 LTS to 8.04.1 LTS

[Leonard Chatagnier]

--- Rich Carreiro <rlcarr at rlcarr.com> wrote:

> I'm trying to upgrade from 6.06.2LTS to 8.04.1LTS. 
> It's
> a remote system, so I don't want to use
> update-manager.
> I have dapper-updates activated and have installed
> update-manager-core and have everything up to date.
> 
> When I run:
>    sudo do-release-upgrade -d
> I get the errors about hash sum mismatches. 
> Googling
> on that I see I can just leave off the "-d".
> 
> But when I do that, I get the "Unable to calculate
> upgrade
> message".  I don't believe I have anything weird
> installed
> (how can I tell?).  What is the process for
> debugging this
> to see what is preventing do-release-upgrade from
> performing the upgrade?
> 
> Thanks!
> 
>
If I remember correctly, 6.06.2LTS is Dapper. Have you
changed your sources.list entries from dapper to the
next higher version.  Sorry, I don't remember if it
gutsy or if there's another in between.  If you go the
upgrade route you have to upgrade in sequence and
after fully upgrading each version which is a real
pain. Done it once but never again.  Will hereafter
use the live CD or alternate CD iso and burn my own
now that I have a burner. Too bad you don't have that
option on the remote machine at least I don't know if
it's possible but suspect not.  HTH,

Leonard Chatagnier
lenc5570 at sbcglobal.net