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scripts/02a-dualboot-fix.sh

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+#!/bin/bash
+
+# ==============================================================================
+# Script: 02a-dualboot-fix.sh
+# Purpose: Auto-configure for Windows dual-boot (OS-Prober only).
+# ==============================================================================
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+source "$SCRIPT_DIR/00-utils.sh"
+
+check_root
+
+# --- GRUB Installation Check ---
+if ! command -v grub-mkconfig &>/dev/null || [ ! -f "/etc/default/grub" ]; then
+    warn "GRUB is not detected. Skipping dual-boot configuration."
+    exit 0
+fi
+
+# --- Helper Functions ---
+
+# Sets a GRUB key-value pair.
+set_grub_value() {
+    local key="$1"
+    local value="$2"
+    local conf_file="/etc/default/grub"
+    
+    local escaped_value
+    escaped_value=$(printf '%s\n' "$value" | sed 's,[\/&],\\&,g')
+
+    if grep -q -E "^#\s*$key=" "$conf_file"; then
+        exe sed -i -E "s,^#\s*$key=.*,$key=\"$escaped_value\"," "$conf_file"
+    elif grep -q -E "^$key=" "$conf_file"; then
+        exe sed -i -E "s,^$key=.*,$key=\"$escaped_value\"," "$conf_file"
+    else
+        log "Appending new key: $key"
+        echo "$key=\"$escaped_value\"" >> "$conf_file"
+    fi
+}
+
+# --- Main Script ---
+
+section "Phase 2A" "Dual-Boot Configuration (Windows)"
+
+# ------------------------------------------------------------------------------
+# 1. Detect Windows
+# ------------------------------------------------------------------------------
+section "Step 1/2" "System Analysis"
+
+log "Installing dual-boot detection tools (os-prober, exfat-utils)..."
+exe pacman -S --noconfirm --needed os-prober exfat-utils
+
+log "Scanning for Windows installation..."
+WINDOWS_DETECTED=$(os-prober | grep -qi "windows" && echo "true" || echo "false")
+
+if [ "$WINDOWS_DETECTED" != "true" ]; then
+    log "No Windows installation detected by os-prober."
+    log "Skipping dual-boot specific configurations."
+    log "Module 02a completed (Skipped)."
+    exit 0
+fi
+
+success "Windows installation detected."
+
+# --- Check if already configured ---
+OS_PROBER_CONFIGURED=$(grep -q -E '^\s*GRUB_DISABLE_OS_PROBER\s*=\s*(false|"false")' /etc/default/grub && echo "true" || echo "false")
+
+if [ "$OS_PROBER_CONFIGURED" == "true" ]; then
+    log "Dual-boot settings seem to be already configured."
+    echo ""
+    echo -e "   ${H_YELLOW}>>> It looks like your dual-boot is already set up.${NC}"
+    echo ""
+fi
+
+# ------------------------------------------------------------------------------
+# 2. Configure GRUB for Dual-Boot
+# ------------------------------------------------------------------------------
+section "Step 2/2" "Enabling OS Prober"
+
+log "Enabling OS prober to detect Windows..."
+set_grub_value "GRUB_DISABLE_OS_PROBER" "false"
+
+success "Dual-boot settings updated."
+
+log "Regenerating GRUB configuration..."
+if exe grub-mkconfig -o /boot/grub/grub.cfg; then
+    success "GRUB configuration regenerated successfully."
+else
+    error "Failed to regenerate GRUB configuration."
+fi
+
+log "Module 02a completed."