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2024/05/03

先備份重要資料，必要時，雙重備份

Keep in mind that most of the times instead of apt-get upgrade what you want to do is

sudo apt-get dist-upgrade

https://help.ubuntu.com/community/NobleUpgrades

Upgrade from 22.04 LTS or 23.10 to 24.04 LTS

Upgrading Ubuntu Desktops to 24.04 LTS

You can easily upgrade over the network with the following procedure.

Run the update-manager application.
In Update Manager, click the Settings... button, and enter your password to start the Software Sources application.
Select the sub menu Updates from the Software Sources application.
Confirm the "Notify me of a new Ubuntu version:" option is set to "For any new version", and change it if otherwise.
Close the Software Sources application and return to Update Manager.
In Update Manager, click the Check button to check for new updates. ---沒有這個按鍵
If there are any updates to install, use the Install Updates button to install them.
Run update-manager.
If you want to upgrade early, before upgrades are officially supported, you can pass the -d option when running update-manager. Do this at your own risk. It is advised to check the release notes for Ubuntu 24.04 LTS before doing so.
A message will appear informing you of the availability of the new release.
Click Upgrade.
Follow the on-screen instructions.

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https://askubuntu.com/questions/94102/what-is-the-difference-between-apt-get-update-and-upgrade