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+* Debian Preseed Configuration
+
+This Git repository contains a preseed configuration file (preseed.txt) that can be used to automate the installation of Debian on default machines. The preseed file is based on the official DebianInstaller/Preseed documentation, which can be found [[https://wiki.debian.org/DebianInstaller/Preseed][here]].
+
+* Usage
+
+To use this preseed configuration during installation, follow these steps:
+
+1. When the graphical installer boot menu appears, select the "Help" entry.
+2. You will get a generic help screen with a boot: prompt at the bottom.
+3. Type the following command, replacing the URL with the address to your preseed configuration file:
+#+begin_src shell
+auto url=http://webserver/path/preseed.cfg
+#+end_src
+
+* Preseed Configuration Details
+
+The preseed configuration includes the following sections:
+Localization
+
+    Language: English (US)
+    Country: Germany
+
+Network Configuration
+
+    Automatically choose a network interface with a link.
+
+Mirror Settings
+
+    Use manual mirror selection with `http.de.debian.org` as the mirror.
+
+Account Setup
+
+- Set root password to `asdf`.
+- Create a user account with username `user` and password `asdf`. This user will belong to the groups: `audio`, `cdrom`, `video`, `sudo`.
+
+Clock and Time Zone Setup
+
+- Hardware clock is set to UTC.
+- Time zone is set to `Europe/Berlin`.
+- NTP is enabled to sync the clock.
+
+Partitioning
+
+- Automatically partition the disk with GPT label.
+- Use the `atomic` partitioning recipe (all files in one partition).
+
+Base System Installation
+
+- Additional packages to install: `openssh-server`, `build-essential`, `sudo`, `git`, `iperf3`, `smartmontools`, `vim`, `curl`, `tree`, `rsync`, `systemd-timesyncd`, `neofetch`, `btrfs-progs`, `powertop`.
+
+Boot Loader Installation
+
+- Grub is the boot loader.
+- Grub will be installed to the UEFI partition/boot record if no other operating system is detected.
+
+Finishing Up the Installation
+
+- Avoid displaying the last message about the install being complete.
+- After installation, the system will halt (not reboot).
+
+Advanced Options
+
+- Custom commands will be run after installation to set up SSH keys for the `user` account.
+
+* Custom Commands
+
+The following custom commands will be executed during the installation:
+
+#+begin_src shell
+mkdir -p /home/user/.ssh/
+echo "sh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIKqc9fnzfCz8fQDFzla+D8PBhvaMmFu2aF+TYkkZRxl9 tuan@genesis-2022-01-20" > /target/home/user/.ssh/authorized_keys
+chown -R user:user /target/home/user/.ssh/
+chmod 700 /target/home/user/.ssh/
+chmod 600 /target/home/user/.ssh/authorized_keys
+#+end_src
+
+These commands will create an .ssh directory in the user's home directory, add an authorized SSH key, and set the appropriate permissions.
+
+Feel free to customize this preseed configuration to suit your specific requirements.