gpt -> mbr. systemd-boot -> grub

hosts/ess-helm/boot.nix

@@ -1,7 +1,9 @@
 {
-  boot.loader.systemd-boot = {
-    enable = true;
-    configurationLimit = 10;
+  boot.loader = {
+    grub = {
+      enable = true;
+      device = "/dev/sda";
+    };
+    timeout = 1;
   };
-  boot.loader.efi.canTouchEfiVariables = true;
 }

hosts/ess-helm/disks.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-SSD='/dev/disk/by-id/scsi-0QEMU_QEMU_HARDDISK_116314040'
+SSD='/dev/sda'
 MNT='/mnt'
 SWAP_GB=1
 
@@ -14,50 +14,61 @@ wait_for_device() {
   echo "Device $device is ready."
 }
 
-# Function to install a package if it's not already installed
-install_if_missing() {
-  local cmd="$1"
-  local package="$2"
-  if ! command -v "$cmd" &> /dev/null; then
-    echo "$cmd not found, installing $package..."
-    nix-env -iA "nixos.$package"
-  fi
-}
-
-install_if_missing "sgdisk" "gptfdisk"
-install_if_missing "partprobe" "parted"
-
+swapoff --all
+udevadm settle
 wait_for_device $SSD
 
 echo "Wiping filesystem on $SSD..."
 wipefs -a $SSD
 
-echo "Clearing partition table on $SSD..."
-sgdisk --zap-all $SSD
+echo "Creating new MBR partition table on $SSD..."
+fdisk $SSD << EOF
+o
+w
+EOF
 
 echo "Partitioning $SSD..."
-sgdisk -n1:1M:+1G         -t1:EF00 -c1:BOOT $SSD
-sgdisk -n2:0:+"$SWAP_GB"G -t2:8200 -c2:SWAP $SSD
-sgdisk -n3:0:0            -t3:8304 -c3:ROOT $SSD
+fdisk $SSD << EOF
+n
+p
+1
+
++512M
+a
+n
+p
+2
+
++${SWAP_GB}G
+t
+2
+82
+n
+p
+3
+
+
+w
+EOF
+
 partprobe -s $SSD
 udevadm settle
-
-wait_for_device ${SSD}-part1
-wait_for_device ${SSD}-part2
-wait_for_device ${SSD}-part3
+wait_for_device "${SSD}1"
+wait_for_device "${SSD}2"
+wait_for_device "${SSD}3"
 
 echo "Formatting partitions..."
-mkfs.vfat -F 32 -n BOOT "${SSD}-part1"
-mkswap -L SWAP "${SSD}-part2"
-mkfs.ext4 -L ROOT "${SSD}-part3"
+mkfs.ext4 -L BOOT "${SSD}1"
+mkswap -L SWAP "${SSD}2"
+mkfs.ext4 -L ROOT "${SSD}3"
 
 echo "Mounting partitions..."
-mount -o X-mount.mkdir "${SSD}-part3" "$MNT"
+mount -o X-mount.mkdir "${SSD}3" "$MNT"
 mkdir -p "$MNT/boot"
-mount -t vfat -o fmask=0077,dmask=0077,iocharset=iso8859-1 "${SSD}-part1" "$MNT/boot"
+mount "${SSD}1" "$MNT/boot"
 
 echo "Enabling swap..."
-swapon "${SSD}-part2"
+swapon "${SSD}2"
 
 echo "Partitioning and setup complete:"
 lsblk -o NAME,FSTYPE,SIZE,MOUNTPOINT,LABEL

hosts/ess-helm/hardware.nix

@@ -8,19 +8,16 @@
 
 {
   imports = [
-    (modulesPath + "/installer/scan/not-detected.nix")
+    (modulesPath + "/profiles/qemu-guest.nix")
   ];
 
   boot.initrd.availableKernelModules = [
     "ahci"
-    "nvme"
-    "sd_mod"
-    "sdhci_pci"
-    "sr_mod"
-    "usb_storage"
+    "xhci_pci"
     "virtio_pci"
     "virtio_scsi"
-    "xhci_pci"
+    "sd_mod"
+    "sr_mod"
   ];
   boot.initrd.kernelModules = [ ];
   boot.kernelModules = [ ];
@@ -33,14 +30,12 @@
 
   fileSystems."/boot" = {
     device = "/dev/disk/by-label/BOOT";
-    fsType = "vfat";
-    options = [
-      "fmask=0022"
-      "dmask=0022"
-    ];
+    fsType = "ext4";
   };
 
-  swapDevices = [ { device = "/dev/disk/by-label/SWAP"; } ];
+  swapDevices = [
+    { device = "/dev/disk/by-label/SWAP"; }
+  ];
 
   networking.useDHCP = lib.mkDefault true;