gistfile1.txt

#!/bin/bash
set -euo pipefail
URL="https://github.com/home-assistant/operating-system/releases/download/17.3/haos_generic-x86-64-17.3.img.xz"
TARGET=$(lsblk -dpno NAME,TYPE | awk '$2=="disk" && $1 ~ /nvme/ {print $1}' | sort | head -n1)
[ -n "${TARGET:-}" ] || { echo "No NVMe disk found."; exit 1; }
echo "Detected NVMe target: $TARGET"
lsblk -o NAME,SIZE,MODEL,TRAN "$TARGET"
read -rp "Write HAOS 17.3 to $TARGET? This ERASES the disk. Type yes: " ok </dev/tty
[ "$ok" = "yes" ] || { echo "Aborted."; exit 1; }
curl -L "$URL" | xzcat | dd of="$TARGET" bs=4M status=progress conv=fsync
sync
echo "Done — remove the USB stick and reboot into the SSD."