Abra sua lista de repositórios:
Remova todos os repositórios do Squeeze e adicione os repositórios para o Wheezy:
deb-src http://mirrors.kernel.org/debian/ wheezy main
deb http://security.debian.org/ wheezy/updates main
deb-src http://security.debian.org/ wheezy/updates main
# wheezy-updates, previously known as ‘volatile’
deb http://mirrors.kernel.org/debian/ wheezy-updates main
deb-src http://mirrors.kernel.org/debian/ wheezy-updates main
Atualize a lista de pacotes:
Atualize o sistema:
Atualize a distro:
Pronto. Agora reinicie o sistema e verifique a nova versão:
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1
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$lsb_release–a
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Fontes:
http://sejalivre.org/fazendo-upgrade-do-debian-squeeze-para-wheezy/
http://debianmaniaco.blogspot.com.br/2012/04/atualizando-do-squeeze-para-o-wheezy.html
http://blog.masterdaweb.com/linux-2/atualizando-debian-6-squeeze-para-debian-7-wheezy/