From cb9884615bfc2f3e2b4a30087156431065ca61b7 Mon Sep 17 00:00:00 2001
From: Michal Fox <me@dualfroz.com>
Date: Sat, 3 Oct 2026 03:10:15 +0200
Subject: [PATCH] fix #6330: ui: vm wizard: use a bigger default disk size for
 windows 11

The create wizard proposes a 32 GiB disk for every guest OS. That is
too small for Windows 11, whose setup refuses to install to it. The
reporter found that the 24H2 setup needs at least 53 GB, and Microsoft
documents 64 GB as the minimum storage requirement for Windows 11.

Add the disk size to the OS defaults, 64 for the 'win11' OS type and 32
like before for all others, and set it on the disk when the OS type is
selected, like the bus type. As with the bus type, this is only done if
there is a single disk.

Signed-off-by: Michal Fox <me@dualfroz.com>
---
 www/manager6/qemu/OSDefaults.js | 4 ++++
 www/manager6/qemu/OSPanel.js    | 1 +
 2 files changed, 5 insertions(+)

diff --git a/www/manager6/qemu/OSDefaults.js b/www/manager6/qemu/OSDefaults.js
index df5ad8a..b8992e4 100644
--- a/www/manager6/qemu/OSDefaults.js
+++ b/www/manager6/qemu/OSDefaults.js
@@ -52,6 +52,7 @@ Ext.define('PVE.qemu.OSDefaults', {
                     virtio: 1,
                 },
                 scsihw: 'virtio-scsi-single',
+                diskSize: 32,
             },
 
             aarch64: {
@@ -66,6 +67,7 @@ Ext.define('PVE.qemu.OSDefaults', {
                 },
                 scsihw: 'virtio-scsi-single',
                 bios: 'ovmf',
+                diskSize: 32,
             },
         };
 
@@ -114,6 +116,8 @@ Ext.define('PVE.qemu.OSDefaults', {
             parent: 'generic',
             machine: 'q35',
             bios: 'ovmf',
+            // Windows 11 requires at least 64 GB of storage
+            diskSize: 64,
         });
 
         me.getDefaults = function (ostype, arch = 'x86_64') {
diff --git a/www/manager6/qemu/OSPanel.js b/www/manager6/qemu/OSPanel.js
index 556ad4c..b653bd3 100644
--- a/www/manager6/qemu/OSPanel.js
+++ b/www/manager6/qemu/OSPanel.js
@@ -54,6 +54,7 @@ Ext.define('PVE.qemu.OSPanel', {
             me.setWidget('pveBusSelector', targetValues.busType);
             me.setWidget('pveNetworkCardSelector', targetValues.networkCard);
             me.setWidget('CPUModelSelector', targetValues.cputype);
+            me.setWidget('pveMultiHDPanel numberfield[name=disksize]', targetValues.diskSize);
             var scsihw = targetValues.scsihw || '__default__';
             this.getViewModel().set('current.scsihw', scsihw);
             this.getViewModel().set('current.ostype', ostype);