Upgrading Debian 8 to Debian 10.

[hack3rcon]

Hello,
How can I upgrade debian 8 to Debian 10 via source DVD and without internet? If I download the last version of DVD and mount it and change "source.list" to that mount point then is it enough?

Thanks.

[Bulkley]

You would have to upgrade to 9 first. Frankly it would be too much trouble. Back up your important stuff and do a fresh install.

[hack3rcon]

You would have to upgrade to 9 first. Frankly it would be too much trouble. Back up your important stuff and do a fresh install.

I did it on another system as online:http://forums.debian.net/viewtopic.php?f=30&t=142444.
I want to know how can I do it as offline?

Thanks.

[CwF]

If it worked out for you in that thread you maybe should mark it solved, to suggest to other readers and the few that search for themselves that there just might be a solution somewhere in the thread. You could even add a clear summary of how it went, and whether you made it to buster or not...

Otherwise,
http://forums.debian.net/viewtopic.php?f=30&t=138748&hilit=+trusted
I think I typed something relevant there...
In my experience doing offline machines a repo from a single dvd may not be everything. When I did that it was a 12GB+ repo on a usb stick. Foreign repos can be included in your local repo, details and testing is up to you. It can work.

Of course, the same could be used for an offline reinstall. Upgrading from local media when you've done it before is much much faster. Reinstalling is much faster if the technique is untested and fails, forcing the reinstall.

[hack3rcon]

How can I download the set of DVDs?

[arzgi]

How can I download the set of DVDs?

https://www.debian.org/CD/index.en.html

[andre@home]

Consider the installation of a complete fresh system.
It will free you from all the old stuff dragging with you, your focus will be much better on the newest system.
There might be a good reason to do just an upgrade. That's your choice. So up to you.

[hack3rcon]

Thank you for your advice.
I have two questions:
1- If I upgrade system manually and it booted without any error then how can I sure everything is OK?
2- If I mount .ISO file under "/mnt" then which part of my "source.list" file must be changed? Is https://linuxconfig.org/add-cdrom-block-device-to-debian-apt-sources-list enough?

Thanks.