Proxmox VE: Install from Debian 12

Detail server

Setup hostname

hostnamectl set-hostname prana.pramudika.my.id 
echo "172.29.0.81 prana.pramudika.my.id prana" >> /etc/hosts

Add Proxmox repository and key

echo "deb [arch=amd64] http://download.proxmox.com/debian/pve bookworm pve-no-subscription" > /etc/apt/sources.list.d/pve-install-repo.list

wget https://enterprise.proxmox.com/debian/proxmox-release-bookworm.gpg -O /etc/apt/trusted.gpg.d/proxmox-release-bookworm.gpg 

Update repository and system

apt update && apt full-upgrade -y

Install Proxmox VE kernel

apt install proxmox-default-kernel -y

After install new kernel, reboot the server

reboot

Install Proxmox VE packages

apt install proxmox-ve postfix open-iscsi chrony -y

If there is a postfix dialog displayed, you can set the email server, because I don't use this, just select Local only

Remove Debian kernel

apt remove linux-image-amd64 'linux-image-6.1*'

Update grub2

update-grub

Remove os-probe packages that not needed, os-prober is for dual boot system, accidently can scan your virtual machine boot and make problem in proxmox.

apt remove os-prober

Access via Web-UI

https://your-ip:8006