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I want to upgrade - in this case, from Ubuntu Trusty to Vivid (going through Utopic if necessary) but I'd really rather do the upgrade in two parts, doing a dry run to get all the packages locally cached when I have an idle network (i.e.: overnight, not during the day) and then doing the installation part when I have time to sit and watch the machine (i.e.: when I am awake and interacting with it).

I'm aware that I might be able to trick apt-get into doing this by monkeying with sources.list and then doing an apt-get dist-upgrade --download-only, but:

  1. will those packages actually persist when I run do-release-upgrade, or does that purge all the caches first?
  2. will this have any unsupported / bad interactions with the supported upgrade path?

I do want to follow the supported upgrade path as much as possible, I'd just like to be able to download packages ahead of time.

Glyph
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1 Answers1

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According to askubunutu: how to upgrade from an iso you can upgrade using the .iso, which would make it possible for you to just download the iso and and use it upgrade (mount it, burn a cd from it or dd it to a usb drive)

gnur
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