.

flake.nix

@@ -38,7 +38,6 @@
           nix-bitcoin.generateSecrets = true;
 
           disko.devices = {
-            # ───────── Root disk ─────────
             disk.root = {
               type = "disk";
               device = "/dev/sda";
@@ -67,7 +66,6 @@
               };
             };
 
-            # LVM volume group on the root partition
             lvm_vg.root_vg = {
               type = "lvm_vg";
               lvs = {
@@ -83,7 +81,6 @@
               };
             };
 
-            # ───────── Data disk for bitcoind ─────────
             disk.data = {
               type = "disk";
               device = "/dev/sdb";
@@ -93,7 +90,7 @@
                 partitions = {
                   data = {
                     size = "100%";
-                    type = "8300"; # regular Linux FS
+                    type = "8300";
                     content = {
                       type = "filesystem";
                       format = "xfs";
@@ -105,6 +102,18 @@
               };
             };
           };
+          boot.loader = {
+            efi = {
+              canTouchEfiVariables = true;
+              efiSysMountPoint = "/boot";
+            };
+            grub = {
+              enable = true;
+              device = "nodev"; # For UEFI; installs to ESP
+              efiSupport = true;
+              useOSProber = false; # Avoid scanning sdb
+            };
+          };
 
           services.bitcoind = {
             enable = true;