It’s already been discussed in this thread, read above.
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Simply because the pi isn’t x86_64. You wanted this thread Installing Home Assistant Supervised on a Raspberry Pi using Debian 12
As it says in post 1
This guide will help you to install Home Assistant Supervised, on almost any machine type you choose. This guide has been tested on machines including a Lenovo m72e, Dell Optiplex SFF 990, Dell Optiplex USFF 780 and a HP T520 thin client. If you are using a Raspberry Pi , follow this guide.
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thanks,
I’ve learnt my lesson: if anything else fails, read the instructions
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I am facing the sam issue while installing on Debian 12 VPS.
Editing /etc/network/interfaces won’t help and I get name resolution errors.
This also kicks me off the bash and I can’t reconnect to the server after a reboot.
I have followed This article and I am already running an instance on Vultr.
For some reason when I install network-manager on another VPS (Same config as Vultr) I get the The
following network interfaces were found in /etc/network/interfaces which means they are currently configured by ifupdown:
Never had this ifupdown problem on Vultur VPS!
As I see there are 2 main problems here:
1: ifupdown editing the /etc/network/interfaces and messing things up
2: systemd-resolved breaking the network interface
I was able to solve number 2 on Vultr, but it just won’t work on this server with the same config.
In step 2.2 when I type the first command (wget https://github.com/home-assistant/os-agent/releases/download/1.6.0/os-agent_1.6.0_linux_x86_64.deb) the connection times out. It tries 20 times and then gives up. … I’m up to 60. Is there a problem with the command, with my patience, or what? Advice?
THX
Welcome to the forum, Paul 
Have you checked whether DNS on the Debian installation can still resolve hostnames? What does the logfile show when running wget https://… ?
Check whether systemd-resolved is correctly installed:
dpkg -s systemd-resolved
The output should contain similar to:
Version: 252.17-1~deb12u1
Replaces: resolvconf, systemd (<< 251.3-2~)
Provides: resolvconf
In case systemd-resolved is not installed run:
sudo apt-get install systemd-resolved
If DNS is still unable to resolve hostnames after making sure that systemd-resolved is installed and correctly running do further readings about the issue here and here.
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Thx for the welcome! I feel like I’m over my head as I am just starting out. I’ve tried several things and it looks like my root problem is this message: The package os-agent needs to be reinstalled, but I can’t find an archive for it." I’ve done several searches and can’t find an answer to that one!
It’s part of the installation instructions
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I am really frustrated! I have restarted, retried and keep running into different roadblocks. I now have a stable dual boot system with Windows 11 and the latest Debian install GUI. I opened the Terminal and started following these instructions carefully. (Of course, using Terminal in the GUI, the very first command line is just “su” to get to the root rather than the longer “sudo -i”.
This time when I got to:
curl -fsSL get.docker.com | sh
I get:
curl: (6) Could not resolve host: get.docker.com
I’ve seen this question before and the answers were above my head. Can someone give me simple step-by-step commands to run in the terminal to get through this step/command??
This guide covers installing HA Supervised on a Debian 12 based system, no GUI and no dual booting.
If you are installing in some way that is outside of the scope of the guide, please don’t ask for support as you have not followed the guide.
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Where can I get help. Certainly I’m not the only one hot using a Rasberry Pi.
As for installing Home Assistant Supervised on a Raspberry Pi using Debian 12 there is even a dedicated guide for doing so.
Nevertheless same with this guide: No GUI and no dual booting!
Is there any special reason why you want to install HA Supervised? I recommend you to stay away from HA Supervised since this kind of installation makes solid Linux knowledge mandatory.
Home Assistant Operating System (HA OS) might be more suitable for you and you dont need much Linux knowledge to install and run Home Assistant:
For an in-depth reading about the latter look HERE.
BTW, the Search-function of this forum works pretty well 
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You have a dns issue.
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It will not make a difference if the computer is dual booted.
I’d suggest trying to dual boot Windows 11 and desktop Debian on a Pi while using the x86/64 guide will almost certainly make a difference.
Are you saying this because of the desktop on debian?
Because of this and previous comments. Perhaps I’m misunderstanding.
You’re both right. Op should probably use the other guide. But nevertheless this is a DNS issue. Fix that or nothing works
I’ve seen this before, and it turned out to be a IP6 dns issue, so maybe try again using IP4 only?
Thx all. A couple things. I appreciate the comment about dual booting not affecting anything since when booted to Debian, it can’t see the other partitions. I want to use supervised for several reasons. I’m trying to relearn skills I forgot in the 80s so I greatly appreciate this community!!
So, overnight I DID wipe my entire hard drive yet again and then used the latest Debian installer, selecting the non GUI version. I partitioned the drives successfully and got through the debian issue by using this command: sudo apt install docker.io. That doesn’t need DNS since it was already in the repository.
But several of you are correct that is was a DNS issue. Now the key command to Home Assistant · GitHub … failed with a similar message about unable to resolve host. I have been trying to find a link for fixing DNS issues in plain language. LOL! I’ll keep searching, but if someone can help, I would apprciate it!