Appendiks A. Håndter dit stretch-system før opgraderingen

Det er grundlæggende ikke forskelligt fra enhver anden opgradering af stretch som du har udført. Den eneste forskel er, at du først skal sikre dig, at din pakkeliste stadig indeholder referencer til stretch som forklaret i Afsnit A.2, “Checking your APT source-list files”.

Hvis du opgraderer dit system via et Debianspejl, vil systemet automatisk blive opgraderet til den seneste punktudgave (point release) af stretch.

If any of the lines in your APT source-list files (see sources.list(5)) contain references to “stable”, this is effectively pointing to buster already. This might not be what you want if you are not yet ready for the upgrade. If you have already run apt update, you can still get back without problems by following the procedure below.

Hvis du allerede har installeret pakker fra buster, er der ikke længere meget mening i at installere pakker fra stretch. I dette tilfælde skal du bestemme dig for, om du vil fortsætte eller ej. Det er muligt at nedgradere pakker, men det beskrives ikke her.

As root, open the relevant APT source-list file (such as /etc/apt/sources.list) with your favorite editor, and check all lines beginning with deb http:, deb https:, deb tor+http:, deb tor+https:, URIs: http:, URIs: https:, URIs: tor+http: or URIs: tor+https: for a reference to “stable”. If you find any, change stable to stretch.

If you have any lines starting with deb file: or URIs: file:, you will have to check for yourself if the location they refer to contains a stretch or buster archive.

	Vigtigt
	Do not change any lines that begin with deb cdrom: or URIs: cdrom:. Doing so would invalidate the line and you would have to run apt-cdrom again. Do not be alarmed if a cdrom: source line refers to “unstable”. Although confusing, this is normal.

Hvis du har foretaget ændringer, så gem filen og kør

# apt update

for at opdatere pakkelisten.

Før du opgraderer dit system til buster, så anbefales det at fjerne gamle konfigurationsfiler (såsom *.dpkg-{new,old}-filer under /etc fra systemet.

Using a legacy non-UTF-8 locale has been unsupported by desktops and other mainstream software projects for a long time. Such locales should be upgraded by running dpkg-reconfigure locales and selecting a UTF-8 default. You should also ensure that users are not overriding the default to use a legacy locale in their environment.