Use xorriso. Use local ISO instead of downloading

.gitignore

@@ -0,0 +1 @@
+*.iso

make_iso.sh

@@ -1,33 +1,32 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Download Windows ISO
 # For other Windows images:
 # 	https://www.microsoft.com/en-us/software-download/windows10
-curl -L 'https://software.download.prss.microsoft.com/dbazure/Win10_22H2_English_x64v1.iso?t=6581e2e7-d916-4200-8190-6828a7e33a09&e=1705909660&h=3cd386b1d91395baa96b6fe52e12229fab8b64cf1f07a80228928c389ead697f' -o Windows10_x86_64_English.iso
+#curl -L 'https://software.download.prss.microsoft.com/dbazure/Win11_22H2_English_x64v1.iso?t=6581e2e7-d916-4200-8190-6828a7e33a09&e=1705909660&h=3cd386b1d91395baa96b6fe52e12229fab8b64cf1f07a80228928c389ead697f' -o Windows10_x86_64_English.iso
 
-mkdir win10_iso
+rm -rf win11_iso
-mkdir win10_iso_modified
+sudo rm -rf win11_iso_modified
-sudo mount -o loop Windows10_x86_64_English.iso win10_iso
-cp -R win10_iso/* win10_iso_modified
-cp Autounattend.xml win10_iso_modified
 
-# Make an ISO
+mkdir win11_iso
-# Ref: https://adminthing.blogspot.com/2020/06/modify-windows-ISO.html
+mkdir win11_iso_modified
-mkisofs \
+sudo mount -o ro,loop Win11_24H2_Italian_x64.iso win11_iso
-	-bboot/etfsboot.com \
+cp -R win11_iso/* win11_iso_modified
+cp autounattend.xml win11_iso_modified
+
+# https://blog.linux-ng.de/2025/01/02/build-unattended-windows-iso/
+xorriso -as mkisofs \
+	-iso-level 4 \
+	-rock \
+	-disable-deep-relocation \
+	-untranslated-filenames \
+	-b boot/etfsboot.com \
 	-no-emul-boot \
-	-boot-load-seg 1984 \
 	-boot-load-size 8 \
-	-iso-level 2 \
+	-eltorito-alt-boot \
-	-J \
+	-eltorito-platform efi \
-	-l \
+	-b efi/microsoft/boot/efisys_noprompt.bin \
-	-D \
+	-o Win11_24H2_Italian_x64_Autounattend.iso \
-	-N \
+	./win11_iso_modified
-	-joliet-long \
-	-allow-limited-size \
-	-relaxed-filenames \
-	-V "WINSP" \
-	-o Win10_English_x86_64_Autounattend.iso \
-	./win10_iso_modified
 
-sudo umount win10_iso
+sudo umount win11_iso