proxmox 8 to 9

  pve8to9 --full

sed -i 's/bookworm/trixie/g' /etc/apt/sources.list

sed -i 's/bookworm/trixie/g' /etc/apt/sources.list.d/pve-enterprise.list

cat > /etc/apt/sources.list.d/proxmox.sources << EOF

Types: deb

URIs: http://download.proxmox.com/debian/pve

Suites: trixie

Components: pve-no-subscription

Signed-By: /usr/share/keyrings/proxmox-archive-keyring.gpg

EOF

cat > /etc/apt/sources.list.d/ceph.sources << EOF

Types: deb

URIs: http://download.proxmox.com/debian/ceph-squid

Suites: trixie

Components: no-subscription

Signed-By: /usr/share/keyrings/proxmox-archive-keyring.gpg

EOF

apt update

apt dist-upgrade

apt modernize-sources