Recall that the whole point of an LTS Release is long-term stability and reliability. This is when your 20.04.x system will begin to offer you a release-upgrade to 22.04.1. This is when LTS-to-LTS release-upgrades are turned on. THREE MONTHS after release day, the first LTS point release occurs (22.04.1). Instead, -d on 20.04 will return an error message, and the use of -d on 22.04 will make you a 22.10 tester. This is the window when NEITHER do-release-upgrade nor do-release-upgrade -d will migrate you from 20.04 to 22.04.That advice has an expiration date, and it's irresponsible of the folks giving that advice when they fail to so explain.ĪBOUT A WEEK OR TWO after release day, the Ubuntu Developers begin working on the next release (22.10 Kinetic), and they move -d from pointing at 22.04 to pointing at 22.10. This is the window when those "use -d" articles appear.So for a couple weeks afterward, -d will still migrate you to 22.04, even though it has been released. ON RELEASE DAY, there is no automatic mechanism to change the behavior of -d. The use of -d means "I want to be a tester".That's how testers get to the development release to do their testing. That's currently 22.10 Kinetic, NOT 22.04 Jammy.īEFORE the release of an LTS, using -d from the older release (like 21.10) will indeed upgrade you to the pre-release 22.04. d does indeed migrate you to the development release of Ubuntu. This question pops up every two years, soon after each LTS release, in various forms. When/why would be mandatory use do-release-upgrade -d?.How does exactly do-release-upgrade -d work?.If using the latest supported release, upgrade to the development release The current Prompt=lts value is is overridden to Prompt=never - therefore now is permanently changedĬurrently the man do-release-upgrade for the -d option indicates -d, -devel-release.The current Prompt=lts value is is overridden to Prompt=normal? - therefore now is permanently changed.The current Prompt=lts value is is ignored and is used Prompt=never temporally ? - it only for the process execution life time.The current Prompt=lts value is ignored and is used Prompt=normal temporally ? - it only for the process execution life time.Should I assume that if sudo do-release-upgrade -d is executed then In the /etc/update-manager/release-upgrades file currently it has the Prompt=lts value - according with some research this value/setting is recommendable In that case, pass the -d option to get the latest supported release forcefully: Set Prompt=normal in /etc/update-manager/release-upgrades. To upgrade to the latest non-LTS develoment release Please note if you may be greeted with the following message: Checking for a new Ubuntu release There is no development version ofĪn LTS available. Upgrade Ubuntu Linux to latest LTS section indicates the following: How To Upgrade Ubuntu 18.04 to 20.04 LTS using command line.About to upgrade the OS from one version to other, for example - from 18.04 to 20.04 or from 20.04 to 22.04 - throughout the process exists and is used the do-release-upgrade command, and it has some options such as -c and -d, now in the following tutorial
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