diff --git a/configuration.nix b/configuration.nix
index 2ba4f73..381d69b 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -32,8 +32,14 @@
   # ═══════════════════════════════════════════════════════════════
   # BOOT
   # ═══════════════════════════════════════════════════════════════
-  boot.loader.systemd-boot.enable = true;
+
+  # ─── Bootloader: Limine with Secure Boot ───
+  boot.loader.systemd-boot.enable = false; # Disabled - using Limine
+  boot.loader.limine.enable = true;
+  boot.loader.limine.secureBoot.enable = true;
   boot.loader.efi.canTouchEfiVariables = true;
+
+  # ─── Kernel ───
   boot.kernelPackages = pkgs.cachyosKernels.linuxPackages-cachyos-latest-x86_64-v3;
 
   # Kernel parameters (consolidated from modules)
@@ -42,6 +48,28 @@
     "amdgpu.ppfeaturemask=0xffffffff" # Full AMD GPU power features (from gpu-amd.nix)
   ];
 
+  # ─── Full Disk Encryption (LUKS) ───
+  boot.initrd.luks.devices = {
+    "cryptroot" = {
+      device = "/dev/disk/by-label/cryptroot";
+      allowDiscards = true; # Enable TRIM for SSD performance
+    };
+    "cryptswap" = {
+      device = "/dev/disk/by-label/cryptswap";
+      allowDiscards = true;
+      keyFile = "/swap.key"; # Auto-unlock with keyfile after root is decrypted
+    };
+  };
+
+  # Include swap keyfile in initrd (encrypted, only accessible during boot)
+  boot.initrd.secrets = {
+    "/swap.key" = /var/lib/secrets/swap.key;
+  };
+
+  # ─── Hibernation ───
+  boot.resumeDevice = "/dev/mapper/cryptswap";
+
+  # ─── Scheduler ───
   # sched-ext scheduler for gaming performance
   services.scx.enable = true;
   services.scx.scheduler = "scx_lavd"; # Low-latency scheduler, good for gaming
@@ -184,6 +212,9 @@
     wget
     curl
 
+    # Secure Boot management
+    sbctl
+
     # Nix tools
     nil # Nix LSP
     nixd
diff --git a/scripts/install-fde.sh b/scripts/install-fde.sh
new file mode 100755
index 0000000..a505399
--- /dev/null
+++ b/scripts/install-fde.sh
@@ -0,0 +1,161 @@
+#!/usr/bin/env bash
+# NixOS Installation Script - Full Disk Encryption with Limine
+# Target: /dev/nvme0n1
+# Layout: 1GB EFI + 34GB encrypted swap + remaining encrypted root
+# Filesystems: FAT32 (EFI), XFS (root), swap
+
+set -euo pipefail
+
+# ═══════════════════════════════════════════════════════════════
+# CONFIGURATION
+# ═══════════════════════════════════════════════════════════════
+DISK="/dev/nvme0n1"
+EFI_PART="${DISK}p1"
+SWAP_PART="${DISK}p2"
+ROOT_PART="${DISK}p3"
+
+EFI_SIZE="1GiB"
+SWAP_SIZE="35GiB"  # 1GiB + 34GiB = 35GiB end point
+
+# ═══════════════════════════════════════════════════════════════
+# SAFETY CHECK
+# ═══════════════════════════════════════════════════════════════
+echo "WARNING: This will DESTROY all data on ${DISK}"
+echo ""
+echo "Partition layout:"
+echo "  ${EFI_PART}  - 1GB   EFI System Partition (FAT32)"
+echo "  ${SWAP_PART} - 34GB  Encrypted swap (LUKS2)"
+echo "  ${ROOT_PART} - Rest  Encrypted root (LUKS2 + XFS)"
+echo ""
+read -p "Type 'YES' to continue: " confirm
+
+if [[ "$confirm" != "YES" ]]; then
+    echo "Aborted."
+    exit 1
+fi
+
+# ═══════════════════════════════════════════════════════════════
+# PHASE 1: PARTITIONING
+# ═══════════════════════════════════════════════════════════════
+echo ""
+echo "═══ Phase 1: Partitioning ${DISK} ═══"
+
+parted "${DISK}" -- mklabel gpt
+parted "${DISK}" -- mkpart ESP fat32 1MiB "${EFI_SIZE}"
+parted "${DISK}" -- set 1 esp on
+parted "${DISK}" -- mkpart swap "${EFI_SIZE}" "${SWAP_SIZE}"
+parted "${DISK}" -- mkpart root "${SWAP_SIZE}" 100%
+
+echo "Partitioning complete."
+sleep 1
+
+# ═══════════════════════════════════════════════════════════════
+# PHASE 2: FORMAT EFI
+# ═══════════════════════════════════════════════════════════════
+echo ""
+echo "═══ Phase 2: Formatting EFI partition ═══"
+
+mkfs.fat -F 32 -n BOOT "${EFI_PART}"
+
+echo "EFI partition formatted."
+
+# ═══════════════════════════════════════════════════════════════
+# PHASE 3: LUKS ENCRYPTION
+# ═══════════════════════════════════════════════════════════════
+echo ""
+echo "═══ Phase 3: Setting up LUKS encryption ═══"
+
+echo ""
+echo "─── Encrypting ROOT partition (${ROOT_PART}) ───"
+echo "You will be prompted to create a passphrase."
+cryptsetup luksFormat --type luks2 --label cryptroot "${ROOT_PART}"
+cryptsetup open "${ROOT_PART}" cryptroot
+
+echo ""
+echo "─── Encrypting SWAP partition (${SWAP_PART}) ───"
+echo "You will be prompted to create a passphrase (can be same as root)."
+cryptsetup luksFormat --type luks2 --label cryptswap "${SWAP_PART}"
+cryptsetup open "${SWAP_PART}" cryptswap
+
+echo "LUKS encryption configured."
+
+# ═══════════════════════════════════════════════════════════════
+# PHASE 4: GENERATE SWAP KEYFILE
+# ═══════════════════════════════════════════════════════════════
+echo ""
+echo "═══ Phase 4: Generating swap keyfile ═══"
+
+dd bs=4096 count=1 if=/dev/random of=/tmp/swap.key iflag=fullblock
+chmod 600 /tmp/swap.key
+
+echo "Adding keyfile to swap LUKS volume..."
+cryptsetup luksAddKey "${SWAP_PART}" /tmp/swap.key
+
+echo "Keyfile generated and added to swap."
+
+# ═══════════════════════════════════════════════════════════════
+# PHASE 5: FORMAT ENCRYPTED VOLUMES
+# ═══════════════════════════════════════════════════════════════
+echo ""
+echo "═══ Phase 5: Formatting encrypted volumes ═══"
+
+mkfs.xfs -L nixos /dev/mapper/cryptroot
+mkswap -L swap /dev/mapper/cryptswap
+
+echo "Filesystems created."
+
+# ═══════════════════════════════════════════════════════════════
+# PHASE 6: MOUNT
+# ═══════════════════════════════════════════════════════════════
+echo ""
+echo "═══ Phase 6: Mounting filesystems ═══"
+
+mount /dev/mapper/cryptroot /mnt
+mkdir -p /mnt/boot
+mkdir -p /mnt/var/lib/secrets
+mount "${EFI_PART}" /mnt/boot
+swapon /dev/mapper/cryptswap
+
+# Store keyfile securely
+mv /tmp/swap.key /mnt/var/lib/secrets/swap.key
+chmod 600 /mnt/var/lib/secrets/swap.key
+chown root:root /mnt/var/lib/secrets/swap.key
+
+echo "Filesystems mounted."
+echo ""
+echo "Mount layout:"
+lsblk -o NAME,SIZE,TYPE,MOUNTPOINT "${DISK}"
+
+# ═══════════════════════════════════════════════════════════════
+# PHASE 7: GENERATE HARDWARE CONFIG
+# ═══════════════════════════════════════════════════════════════
+echo ""
+echo "═══ Phase 7: Generating NixOS hardware configuration ═══"
+
+nixos-generate-config --root /mnt
+
+echo "Hardware configuration generated at /mnt/etc/nixos/"
+
+# ═══════════════════════════════════════════════════════════════
+# NEXT STEPS
+# ═══════════════════════════════════════════════════════════════
+echo ""
+echo "═══════════════════════════════════════════════════════════════"
+echo "  DISK SETUP COMPLETE!"
+echo "═══════════════════════════════════════════════════════════════"
+echo ""
+echo "Next steps:"
+echo ""
+echo "1. Copy your NixOS configuration to /mnt/etc/nixos/"
+echo "   Example: cp -r ~/nixos/* /mnt/etc/nixos/"
+echo ""
+echo "2. IMPORTANT: Verify hardware-configuration.nix has correct mounts:"
+echo "   - fileSystems.\"/\" = { device = \"/dev/mapper/cryptroot\"; fsType = \"xfs\"; }"
+echo "   - fileSystems.\"/boot\" = { device = \"/dev/disk/by-label/BOOT\"; fsType = \"vfat\"; }"
+echo "   - swapDevices = [ { device = \"/dev/mapper/cryptswap\"; } ]"
+echo ""
+echo "3. Run the installation:"
+echo "   nixos-install --flake /mnt/etc/nixos#nixos"
+echo ""
+echo "4. After reboot, run the Secure Boot setup script."
+echo ""
diff --git a/scripts/setup-secureboot.sh b/scripts/setup-secureboot.sh
new file mode 100755
index 0000000..5ce7915
--- /dev/null
+++ b/scripts/setup-secureboot.sh
@@ -0,0 +1,125 @@
+#!/usr/bin/env bash
+# Secure Boot Setup Script for NixOS with Limine
+# Run this AFTER first successful boot into NixOS
+
+set -euo pipefail
+
+echo "═══════════════════════════════════════════════════════════════"
+echo "  NixOS Secure Boot Setup"
+echo "═══════════════════════════════════════════════════════════════"
+echo ""
+
+# ═══════════════════════════════════════════════════════════════
+# CHECK PREREQUISITES
+# ═══════════════════════════════════════════════════════════════
+if [[ $EUID -ne 0 ]]; then
+    echo "ERROR: This script must be run as root (use sudo)"
+    exit 1
+fi
+
+if ! command -v sbctl &> /dev/null; then
+    echo "ERROR: sbctl not found. Ensure your NixOS config includes it."
+    echo "Add to configuration.nix: environment.systemPackages = [ pkgs.sbctl ];"
+    exit 1
+fi
+
+# ═══════════════════════════════════════════════════════════════
+# STEP 1: CHECK CURRENT STATUS
+# ═══════════════════════════════════════════════════════════════
+echo "─── Step 1: Checking current Secure Boot status ───"
+echo ""
+
+sbctl status || true
+echo ""
+
+# ═══════════════════════════════════════════════════════════════
+# STEP 2: CREATE SECURE BOOT KEYS
+# ═══════════════════════════════════════════════════════════════
+echo "─── Step 2: Creating Secure Boot keys ───"
+echo ""
+
+if [[ -d /etc/secureboot/keys ]]; then
+    echo "Keys already exist at /etc/secureboot/keys"
+    read -p "Regenerate keys? (y/N): " regen
+    if [[ "$regen" == "y" || "$regen" == "Y" ]]; then
+        sbctl create-keys
+    fi
+else
+    sbctl create-keys
+fi
+
+echo ""
+echo "Keys created successfully."
+
+# ═══════════════════════════════════════════════════════════════
+# STEP 3: VERIFY WHAT NEEDS SIGNING
+# ═══════════════════════════════════════════════════════════════
+echo ""
+echo "─── Step 3: Checking files that need signing ───"
+echo ""
+
+sbctl verify
+
+echo ""
+
+# ═══════════════════════════════════════════════════════════════
+# STEP 4: ENROLL KEYS
+# ═══════════════════════════════════════════════════════════════
+echo ""
+echo "─── Step 4: Enrolling Secure Boot keys ───"
+echo ""
+echo "IMPORTANT: Before this step, you must:"
+echo "  1. Reboot into UEFI/BIOS settings"
+echo "  2. Find Secure Boot settings"
+echo "  3. Clear existing keys OR put Secure Boot in 'Setup Mode'"
+echo "  4. Save and boot back to NixOS"
+echo ""
+read -p "Have you put Secure Boot in Setup Mode? (y/N): " setup_mode
+
+if [[ "$setup_mode" != "y" && "$setup_mode" != "Y" ]]; then
+    echo ""
+    echo "Please reboot into UEFI and enable Setup Mode first."
+    echo "Then run this script again."
+    exit 0
+fi
+
+echo ""
+echo "Enrolling keys with Microsoft keys included (for hardware compatibility)..."
+sbctl enroll-keys -m
+
+echo ""
+echo "Keys enrolled successfully."
+
+# ═══════════════════════════════════════════════════════════════
+# STEP 5: REBUILD NIXOS TO SIGN EVERYTHING
+# ═══════════════════════════════════════════════════════════════
+echo ""
+echo "─── Step 5: Rebuilding NixOS to sign bootloader and kernel ───"
+echo ""
+
+nixos-rebuild switch --flake ~/nixos#nixos
+
+echo ""
+echo "NixOS rebuilt with signed binaries."
+
+# ═══════════════════════════════════════════════════════════════
+# STEP 6: FINAL VERIFICATION
+# ═══════════════════════════════════════════════════════════════
+echo ""
+echo "─── Step 6: Final verification ───"
+echo ""
+
+sbctl verify
+
+echo ""
+echo "═══════════════════════════════════════════════════════════════"
+echo "  SECURE BOOT SETUP COMPLETE!"
+echo "═══════════════════════════════════════════════════════════════"
+echo ""
+echo "Next steps:"
+echo "  1. Reboot into UEFI/BIOS"
+echo "  2. Enable Secure Boot"
+echo "  3. Save and boot"
+echo ""
+echo "After reboot, verify with: sbctl status"
+echo ""