diff --git a/systems/x86_64-linux/pegasi/disk-config.nix b/systems/x86_64-linux/pegasi/disk-config.nix
index a62b817..93921d7 100644
--- a/systems/x86_64-linux/pegasi/disk-config.nix
+++ b/systems/x86_64-linux/pegasi/disk-config.nix
@@ -1,5 +1,45 @@
 { ... }:
 {
   disko.devices = {
+    # The ZFS pool already exists, and therefore is not configured here.
+    disk = {
+      osdisk = {
+        device = "/dev/disk/by-id/scsi-36782bcb05b9aca002b6c740f07124060";
+        type = "disk";
+        content = {
+          type = "gpt";
+          partitions = {
+            boot = {
+              size = "1M";
+              type = "EF02"; # for grub MBR
+            };
+            ESP = {
+              type = "EF00";
+              size = "512M";
+              content = {
+                type = "filesystem";
+                format = "vfat";
+                mountpoint = "/boot";
+              };
+            };
+            sysroot = {
+              size = "100%";
+              content = {
+                type = "filesystem";
+                format = "ext4";
+                mountpoint = "/";
+              };
+            };
+            swap = {
+              size = "50G";
+              content = {
+                type = "swap";
+                randomEncryption = true;
+              };
+            };
+          };
+        };
+      };
+    };
   };
 }
diff --git a/systems/x86_64-linux/pegasi/hardware.nix b/systems/x86_64-linux/pegasi/hardware.nix
index e81db21..d9af5c1 100644
--- a/systems/x86_64-linux/pegasi/hardware.nix
+++ b/systems/x86_64-linux/pegasi/hardware.nix
@@ -12,8 +12,8 @@
 
   # Bootloader config
   boot.initrd.availableKernelModules = [
-    "ehci_pci" "ahci" "sd_mod" "sr_mod"
-    "isci" "usb_storage" "usbhid"
+    "uhci_hcd" "ehci_pci" "megaraid_sas"
+    "sd_mod" "usb_storage" "usbhid"
   ];
   boot.initrd.kernelModules = [ "dm-snapshot" ];
   boot.kernelModules = [ "kvm-intel" ];
@@ -22,7 +22,8 @@
 
   boot.loader.grub = {
     enable = true;
-    device = config.disko.devices.disk.boot.device;
+    device = config.disko.devices.disk.osdisk.device;
+    efiSupport = true;
     configurationLimit = 5;
   };
 
@@ -33,6 +34,7 @@
 
   # Networking config
   networking.hostId = "0bdd5f68";
+  networking.interfaces.eno2.wakeOnLan.enable = true;
   networking.useDHCP = true;
 
   # Hardware config