From 1501056c6df7d77d0d36a2cccde1e52f96de9ddd Mon Sep 17 00:00:00 2001
From: AlexanderCurl <alexc@alexc.hu>
Date: Sat, 11 Jan 2025 19:32:55 +0000
Subject: [PATCH] Added Michaelsoft Windblows detect and entry create script
 for systemd-boot

---
 detect_windows.sh | 89 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 89 insertions(+)
 create mode 100755 detect_windows.sh

diff --git a/detect_windows.sh b/detect_windows.sh
new file mode 100755
index 0000000..fb3a5c3
--- /dev/null
+++ b/detect_windows.sh
@@ -0,0 +1,89 @@
+#!/bin/bash
+
+# systemd-boot utility script to add Michaelsoft boot entry into systemd-boot
+# AlexC (c) 2025
+
+# Check if the systemd-boot is installed
+if ! command -v bootctl &> /dev/null; then
+    echo "systemd-boot not found. Please install systemd-boot."
+    exit 1
+fi
+
+# Function to detect the EFI partition
+detect_efi_partition() {
+    # Search for the FAT32 filesystem, which is used for EFI partitions
+    efi_partition=$(blkid | grep -i 'vfat' | awk -F: '{print $1}')
+    
+    if [ -z "$efi_partition" ]; then
+        echo "No EFI partition detected."
+        return 1
+    fi
+
+    echo "$efi_partition"
+    return 0
+}
+
+# Function to check if Windows boot files exist in the EFI partition
+check_windows_boot_files() {
+    local efi_partition=$1
+    local efi_dir_mount_point="/mnt/efi"
+
+    # Mount the EFI partition temporarily to check for Windows boot files
+    mount "$efi_partition" "$efi_dir_mount_point" &> /dev/null
+    if [ $? -ne 0 ]; then
+        echo "Failed to mount EFI partition."
+        return 1
+    fi
+
+    # Check if Windows boot files exist in /EFI/Microsoft/Boot/
+    if [ ! -f "$efi_dir_mount_point/EFI/Microsoft/Boot/bootmgfw.efi" ]; then
+        echo "Windows boot files not found in the EFI partition."
+        umount "$efi_dir_mount_point"
+        return 1
+    fi
+
+    # Clean up by unmounting the EFI partition
+    umount "$efi_dir_mount_point"
+    return 0
+}
+
+# Function to add Windows entry to systemd-boot
+add_windows_entry() {
+    local efi_partition=$1
+    local boot_loader_dir="/boot/loader/entries"
+    local windows_entry="$boot_loader_dir/windows.conf"
+
+    # Create the entry directory if it doesn't exist
+    mkdir -p "$boot_loader_dir"
+
+    # Add the Windows entry to systemd-boot
+    echo "Creating systemd-boot entry for Windows..."
+    cat <<EOF > "$windows_entry"
+title   Windows
+efi     /EFI/Microsoft/Boot/bootmgfw.efi
+options root=$efi_partition ro
+EOF
+
+    echo "Windows boot entry added successfully."
+}
+
+# Detect EFI partition and check for Windows boot files
+efi_partition=$(detect_efi_partition)
+if [ $? -eq 0 ]; then
+    check_windows_boot_files "$efi_partition"
+    if [ $? -eq 0 ]; then
+        add_windows_entry "$efi_partition"
+    else
+        echo "Windows boot files are not present. Please ensure Windows is installed properly."
+        exit 1
+    fi
+else
+    echo "Could not detect EFI partition."
+    exit 1
+fi
+
+# Reload systemd-boot to recognize the new entry
+bootctl update
+
+echo "systemd-boot entry for Windows has been added and systemd-boot has been updated."
+exit 0