diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index 140a95c..bdabac3 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -2,6 +2,33 @@
 
 ---
 
+## V39 2026-03-20 23:30:00
+
+**Add single-command bootstrap and fix lfs user permission issues**
+
+### Changes:
+- Added `toolchain/bootstrap.sh`: Single entry point that runs the entire Phase 0:
+  - Tears down and recreates the loopback filesystem (fresh start)
+  - Sets up environment, downloads sources
+  - Copies toolchain scripts to `$LFS/sources/toolchain-scripts/` (lfs-accessible)
+  - Runs `build-all.sh` as lfs user automatically
+- Rewrote `toolchain/scripts/000-setup-disk.sh`:
+  - Now tears down existing build (unmount + delete image) on every run
+  - No longer exits early if mount exists — always gives a fresh filesystem
+- Fixed `toolchain/scripts/build-all.sh`:
+  - Log directory changed from `${SCRIPT_DIR}/../logs` to `${LFS}/sources/logs/`
+  - Fixes "Permission denied" when lfs user can't write to danny's home dir
+
+### Plan deviation/changes:
+- Scripts are now copied to `$LFS/sources/toolchain-scripts/` rather than run from
+  the git repo. This avoids all permission issues with the lfs user not being able
+  to read /home/danny/. The git repo remains the source of truth.
+
+### What is missing/needs polish:
+- None
+
+---
+
 ## V38 2026-03-20 23:00:00
 
 **Sync all Phase 0 build scripts to match Danish mirror tarball versions**
diff --git a/toolchain/bootstrap.sh b/toolchain/bootstrap.sh
new file mode 100644
index 0000000..63e530c
--- /dev/null
+++ b/toolchain/bootstrap.sh
@@ -0,0 +1,124 @@
+#!/bin/bash
+# ============================================================================
+# DarkForge Linux — Phase 0: Full Bootstrap
+# ============================================================================
+# Purpose:  Single entry point that runs the entire Phase 0 bootstrap:
+#           1. Tear down & create fresh loopback filesystem
+#           2. Set up directory structure, lfs user, env files
+#           3. Download source tarballs
+#           4. Copy toolchain scripts to $LFS so lfs user can access them
+#           5. Launch build-all.sh as the lfs user
+#
+# Usage:    sudo -E bash toolchain/bootstrap.sh
+#           (run from the project root, e.g. /home/danny/darkforge)
+#
+# Inputs:   LFS (default: /mnt/darkforge)
+# Outputs:  A complete cross-toolchain and temporary tools on $LFS
+# Assumes:  Running as root on Arch Linux, internet access
+# ============================================================================
+
+set -euo pipefail
+
+# --- Configuration -----------------------------------------------------------
+export LFS="${LFS:-/mnt/darkforge}"
+
+# Detect the project root (parent of toolchain/)
+BOOTSTRAP_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PROJECT_ROOT="$(dirname "${BOOTSTRAP_DIR}")"
+SCRIPT_SRC="${BOOTSTRAP_DIR}/scripts"
+
+# Color output
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+CYAN='\033[0;36m'
+NC='\033[0m'
+
+ok()   { echo -e "${GREEN}>>> $*${NC}"; }
+warn() { echo -e "${YELLOW}>>> $*${NC}"; }
+info() { echo -e "${CYAN}>>> $*${NC}"; }
+fail() { echo -e "${RED}>>> $*${NC}"; exit 1; }
+
+# --- Verify running as root --------------------------------------------------
+[ "$(id -u)" -eq 0 ] || fail "This script must be run as root (use sudo -E)."
+
+echo "============================================================"
+echo " DarkForge Linux — Phase 0 Full Bootstrap"
+echo "============================================================"
+echo ""
+echo "  Project root: ${PROJECT_ROOT}"
+echo "  LFS mount:    ${LFS}"
+echo ""
+
+# =============================================================================
+# Step 1: Create fresh loopback filesystem
+# =============================================================================
+info "STEP 1/5: Setting up build filesystem..."
+bash "${SCRIPT_SRC}/000-setup-disk.sh"
+echo ""
+
+# =============================================================================
+# Step 2: Set up directory structure, lfs user, and env
+# =============================================================================
+info "STEP 2/5: Setting up environment..."
+bash "${SCRIPT_SRC}/000-env-setup.sh"
+echo ""
+
+# =============================================================================
+# Step 3: Download all source tarballs
+# =============================================================================
+info "STEP 3/5: Downloading source tarballs..."
+bash "${SCRIPT_SRC}/000a-download-sources.sh"
+echo ""
+
+# =============================================================================
+# Step 4: Copy toolchain scripts to $LFS/sources/toolchain-scripts/
+# =============================================================================
+info "STEP 4/5: Copying toolchain scripts to ${LFS}/sources/toolchain-scripts/..."
+SCRIPTS_DEST="${LFS}/sources/toolchain-scripts"
+rm -rf "${SCRIPTS_DEST}"
+mkdir -p "${SCRIPTS_DEST}"
+cp -v "${SCRIPT_SRC}/"*.sh "${SCRIPTS_DEST}/"
+chmod +x "${SCRIPTS_DEST}/"*.sh
+chown -R lfs:lfs "${SCRIPTS_DEST}"
+ok "Scripts copied and owned by lfs user"
+echo ""
+
+# =============================================================================
+# Step 5: Run build-all.sh as lfs user
+# =============================================================================
+info "STEP 5/5: Building cross-toolchain as lfs user..."
+echo "  This will take a while (30-60+ minutes on 32 threads)."
+echo "  Logs will be in: ${LFS}/sources/logs/"
+echo ""
+
+# Run build-all.sh as the lfs user with a clean environment
+# The build scripts source darkforge-env.sh internally, so we just
+# need LFS set and the lfs user's PATH to find basic tools.
+su -l lfs -c "
+    export LFS=${LFS}
+    source ${LFS}/sources/darkforge-env.sh
+    bash ${SCRIPTS_DEST}/build-all.sh
+" || {
+    fail "Build failed! Check logs in ${LFS}/sources/logs/"
+}
+
+echo ""
+echo "============================================================"
+echo -e "${GREEN} Phase 0 cross-compilation complete!${NC}"
+echo "============================================================"
+echo ""
+echo "Next steps (run as root):"
+echo ""
+echo "  # Enter the chroot environment:"
+echo "  sudo -E bash ${SCRIPTS_DEST}/023-chroot-setup.sh"
+echo ""
+echo "  # Then inside chroot, run these in order:"
+echo "  bash /sources/toolchain-scripts/024-chroot-essentials.sh"
+echo "  bash /sources/toolchain-scripts/025-gettext.sh"
+echo "  bash /sources/toolchain-scripts/026-bison.sh"
+echo "  bash /sources/toolchain-scripts/027-perl.sh"
+echo "  bash /sources/toolchain-scripts/028-python.sh"
+echo "  bash /sources/toolchain-scripts/029-texinfo.sh"
+echo "  bash /sources/toolchain-scripts/030-util-linux.sh"
+echo "  bash /sources/toolchain-scripts/031-cleanup.sh"
diff --git a/toolchain/scripts/000-setup-disk.sh b/toolchain/scripts/000-setup-disk.sh
index 30d9e80..dfd6d6c 100755
--- a/toolchain/scripts/000-setup-disk.sh
+++ b/toolchain/scripts/000-setup-disk.sh
@@ -5,6 +5,7 @@
 # Purpose:  Create a loopback ext4 filesystem for the LFS build environment.
 #           This avoids repartitioning and uses free space on your root drive.
 #           The loopback file acts exactly like a real partition.
+#           If a previous build exists, tears it down and starts fresh.
 # Inputs:   None (uses defaults below, override via environment)
 # Outputs:  50GB ext4 filesystem mounted at /mnt/darkforge
 # Assumes:  Running as root, ~50GB free on root filesystem
@@ -39,13 +40,17 @@ echo "  Image size:  ${LFS_SIZE}"
 echo "  Mount point: ${LFS}"
 echo ""
 
-# --- Check if already mounted ------------------------------------------------
+# --- Tear down any existing build --------------------------------------------
 if mountpoint -q "${LFS}" 2>/dev/null; then
-    ok "${LFS} is already mounted:"
-    df -h "${LFS}"
-    echo ""
-    echo "To start over: umount ${LFS} && rm ${LFS_IMAGE}"
-    exit 0
+    warn "Existing build found at ${LFS} — tearing down..."
+    umount -l "${LFS}" 2>/dev/null || true
+    ok "Unmounted ${LFS}"
+fi
+
+if [ -f "${LFS_IMAGE}" ]; then
+    warn "Removing old image: ${LFS_IMAGE}"
+    rm -f "${LFS_IMAGE}"
+    ok "Old image removed"
 fi
 
 # --- Check free space ---------------------------------------------------------
@@ -59,22 +64,17 @@ fi
 ok "Free space check: ${AVAIL_GB}GB available, need ${NEED_GB}GB"
 
 # --- Create the loopback image -----------------------------------------------
-if [ -f "${LFS_IMAGE}" ]; then
-    warn "Image file already exists: ${LFS_IMAGE}"
-    echo "  Reusing existing image."
-else
-    echo ">>> Creating ${LFS_SIZE} image file (this takes a moment)..."
-    # Use fallocate for instant allocation (no slow dd)
-    fallocate -l "${LFS_SIZE}" "${LFS_IMAGE}" || {
-        warn "fallocate failed, falling back to truncate..."
-        truncate -s "${LFS_SIZE}" "${LFS_IMAGE}"
-    }
-    ok "Image created: ${LFS_IMAGE}"
+echo ">>> Creating ${LFS_SIZE} image file..."
+# Use fallocate for instant allocation (no slow dd)
+fallocate -l "${LFS_SIZE}" "${LFS_IMAGE}" || {
+    warn "fallocate failed, falling back to truncate..."
+    truncate -s "${LFS_SIZE}" "${LFS_IMAGE}"
+}
+ok "Image created: ${LFS_IMAGE}"
 
-    echo ">>> Formatting as ext4..."
-    mkfs.ext4 -q -L darkforge "${LFS_IMAGE}"
-    ok "Formatted as ext4"
-fi
+echo ">>> Formatting as ext4..."
+mkfs.ext4 -q -L darkforge "${LFS_IMAGE}"
+ok "Formatted as ext4"
 
 # --- Mount it -----------------------------------------------------------------
 mkdir -p "${LFS}"
@@ -84,11 +84,7 @@ ok "Mounted ${LFS_IMAGE} at ${LFS}"
 echo ""
 df -h "${LFS}"
 echo ""
-ok "LFS build partition is ready."
-echo ""
-echo "Next steps:"
-echo "  export LFS=${LFS}"
-echo "  bash toolchain/scripts/000-env-setup.sh"
+ok "LFS build partition is ready (fresh start)."
 echo ""
 echo "To remount after reboot:"
 echo "  sudo mount -o loop ${LFS_IMAGE} ${LFS}"
diff --git a/toolchain/scripts/build-all.sh b/toolchain/scripts/build-all.sh
index f97fcc3..3be058b 100755
--- a/toolchain/scripts/build-all.sh
+++ b/toolchain/scripts/build-all.sh
@@ -14,7 +14,7 @@ set -euo pipefail
 
 LFS="${LFS:-/mnt/darkforge}"
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
-LOG_DIR="${SCRIPT_DIR}/../logs"
+LOG_DIR="${LFS}/sources/logs"
 
 mkdir -p "${LOG_DIR}"