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CodingWondersCodingWonders
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HotInstall Backport from Upstream (06/2025)
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‎Installer/HotInstall.vbproj

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<?xml version="1.0" encoding="utf-8"?>
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<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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<Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
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<PropertyGroup>
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<Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
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<Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
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<ProjectGuid>{1A6D20C4-4CF3-478F-A292-21A90B64C1B6}</ProjectGuid>
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<OutputType>WinExe</OutputType>
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<StartupObject>Installer.My.MyApplication</StartupObject>
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<RootNamespace>Installer</RootNamespace>
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<AssemblyName>Installer</AssemblyName>
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<FileAlignment>512</FileAlignment>
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<MyType>WindowsForms</MyType>
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<TargetFrameworkVersion>v4.8</TargetFrameworkVersion>
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<AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
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<Deterministic>true</Deterministic>
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</PropertyGroup>
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<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
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<PlatformTarget>AnyCPU</PlatformTarget>
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<DebugSymbols>true</DebugSymbols>
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<DebugType>full</DebugType>
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<DefineDebug>true</DefineDebug>
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<DefineTrace>true</DefineTrace>
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<OutputPath>bin\Debug\</OutputPath>
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<DocumentationFile>Installer.xml</DocumentationFile>
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<NoWarn>42016,41999,42017,42018,42019,42032,42036,42020,42021,42022</NoWarn>
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<Prefer32Bit>false</Prefer32Bit>
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</PropertyGroup>
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<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
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<PlatformTarget>AnyCPU</PlatformTarget>
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<DebugType>pdbonly</DebugType>
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<DefineDebug>false</DefineDebug>
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<DefineTrace>true</DefineTrace>
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<Optimize>true</Optimize>
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<OutputPath>bin\Release\</OutputPath>
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<DocumentationFile>Installer.xml</DocumentationFile>
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<NoWarn>42016,41999,42017,42018,42019,42032,42036,42020,42021,42022</NoWarn>
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</PropertyGroup>
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<PropertyGroup>
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<OptionExplicit>On</OptionExplicit>
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</PropertyGroup>
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<PropertyGroup>
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<OptionCompare>Binary</OptionCompare>
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</PropertyGroup>
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<PropertyGroup>
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<OptionStrict>Off</OptionStrict>
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</PropertyGroup>
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<PropertyGroup>
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<OptionInfer>On</OptionInfer>
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</PropertyGroup>
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<PropertyGroup>
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<ApplicationManifest>My Project\app.manifest</ApplicationManifest>
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</PropertyGroup>
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<PropertyGroup>
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<ApplicationIcon>logo.ico</ApplicationIcon>
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</PropertyGroup>
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<ItemGroup>
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<Reference Include="INIFileParser, Version=2.5.2.0, Culture=neutral, PublicKeyToken=79af7b307b65cf3c, processorArchitecture=MSIL">
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<HintPath>..\packages\ini-parser.2.5.2\lib\net20\INIFileParser.dll</HintPath>
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</Reference>
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<Reference Include="Microsoft.Dism, Version=1.0.0.0, Culture=neutral, PublicKeyToken=5bba90053b345501, processorArchitecture=MSIL">
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<HintPath>..\..\..\..\..\..\packages\Microsoft.Dism.3.3.12\lib\net40\Microsoft.Dism.dll</HintPath>
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</Reference>
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<Reference Include="System" />
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<Reference Include="System.Data" />
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<Reference Include="System.Deployment" />
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<Reference Include="System.Drawing" />
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<Reference Include="System.Management" />
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<Reference Include="System.Windows.Forms" />
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<Reference Include="System.Xml" />
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<Reference Include="System.Core" />
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<Reference Include="System.Xml.Linq" />
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<Reference Include="System.Data.DataSetExtensions" />
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<Reference Include="System.Net.Http" />
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</ItemGroup>
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<ItemGroup>
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<Import Include="Microsoft.VisualBasic" />
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<Import Include="System" />
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<Import Include="System.Collections" />
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<Import Include="System.Collections.Generic" />
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<Import Include="System.Data" />
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<Import Include="System.Drawing" />
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<Import Include="System.Diagnostics" />
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<Import Include="System.Windows.Forms" />
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<Import Include="System.Linq" />
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<Import Include="System.Xml.Linq" />
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<Import Include="System.Threading.Tasks" />
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</ItemGroup>
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<ItemGroup>
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<Compile Include="ApplicationEvents.vb" />
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<Compile Include="DSC\DiskSpaceChecker.Designer.vb">
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<DependentUpon>DiskSpaceChecker.vb</DependentUpon>
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</Compile>
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<Compile Include="DSC\DiskSpaceChecker.vb">
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<SubType>Form</SubType>
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</Compile>
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<Compile Include="SplashForm.Designer.vb">
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<DependentUpon>SplashForm.vb</DependentUpon>
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</Compile>
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<Compile Include="SplashForm.vb">
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<SubType>Form</SubType>
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</Compile>
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<Compile Include="InstallationStage.vb" />
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<Compile Include="MainForm.vb">
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<SubType>Form</SubType>
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</Compile>
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<Compile Include="MainForm.Designer.vb">
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<DependentUpon>MainForm.vb</DependentUpon>
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<SubType>Form</SubType>
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</Compile>
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<Compile Include="My Project\AssemblyInfo.vb" />
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<Compile Include="My Project\Application.Designer.vb">
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<AutoGen>True</AutoGen>
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<DependentUpon>Application.myapp</DependentUpon>
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</Compile>
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<Compile Include="My Project\Resources.Designer.vb">
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<AutoGen>True</AutoGen>
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<DesignTime>True</DesignTime>
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<DependentUpon>Resources.resx</DependentUpon>
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</Compile>
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<Compile Include="My Project\Settings.Designer.vb">
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<AutoGen>True</AutoGen>
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<DependentUpon>Settings.settings</DependentUpon>
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<DesignTimeSharedInput>True</DesignTimeSharedInput>
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</Compile>
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<Compile Include="Util\Casters.vb" />
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<Compile Include="Util\Converters.vb" />
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<Compile Include="Util\DriverHelper.vb" />
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<Compile Include="Util\LanguageFileParser.vb" />
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<Compile Include="Util\NativeMethods.vb" />
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<Compile Include="Util\Utilities.vb" />
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<Compile Include="Util\WMIHelper.vb" />
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<Compile Include="WizardPage.vb" />
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</ItemGroup>
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<ItemGroup>
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<EmbeddedResource Include="DSC\DiskSpaceChecker.resx">
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<DependentUpon>DiskSpaceChecker.vb</DependentUpon>
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</EmbeddedResource>
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<EmbeddedResource Include="SplashForm.resx">
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<DependentUpon>SplashForm.vb</DependentUpon>
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</EmbeddedResource>
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<EmbeddedResource Include="MainForm.resx">
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<DependentUpon>MainForm.vb</DependentUpon>
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</EmbeddedResource>
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<EmbeddedResource Include="My Project\Resources.resx">
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<Generator>VbMyResourcesResXFileCodeGenerator</Generator>
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<LastGenOutput>Resources.Designer.vb</LastGenOutput>
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<CustomToolNamespace>My.Resources</CustomToolNamespace>
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<SubType>Designer</SubType>
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</EmbeddedResource>
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</ItemGroup>
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<ItemGroup>
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<None Include="Languages\lang_en.ini">
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<CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
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</None>
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<None Include="Languages\lang_es.ini">
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<CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
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</None>
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<None Include="Languages\lang_fr.ini">
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<CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
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</None>
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<None Include="Languages\lang_it.ini">
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<CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
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</None>
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<None Include="Languages\lang_pt.ini">
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<CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
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</None>
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<None Include="My Project\app.manifest" />
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<None Include="My Project\Application.myapp">
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<Generator>MyApplicationCodeGenerator</Generator>
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<LastGenOutput>Application.Designer.vb</LastGenOutput>
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</None>
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<None Include="My Project\Settings.settings">
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<Generator>SettingsSingleFileGenerator</Generator>
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<CustomToolNamespace>My</CustomToolNamespace>
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<LastGenOutput>Settings.Designer.vb</LastGenOutput>
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</None>
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<None Include="App.config" />
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<None Include="packages.config" />
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</ItemGroup>
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<ItemGroup>
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<None Include="Resources\hotinstall_step1.png" />
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</ItemGroup>
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<ItemGroup>
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<None Include="Resources\hotinstall_step2.png" />
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</ItemGroup>
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<ItemGroup>
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<None Include="Resources\hotinstall_step3.png" />
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</ItemGroup>
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<ItemGroup>
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<Content Include="logo.ico" />
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<Content Include="Resources\SplashScreen\background.jpg">
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<CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
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</Content>
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<None Include="Resources\SplashScreen\logo_aboutdlg_dark.png" />
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<None Include="Resources\hotinstall_step3_dm.png" />
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</ItemGroup>
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<ItemGroup />
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<Import Project="$(MSBuildToolsPath)\Microsoft.VisualBasic.targets" />
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<PropertyGroup>
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<PostBuildEvent>IF EXIST "$(TargetDir)\*.tmp" (
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DEL "$(TargetDir)\*.tmp" /f /q
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)
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break &gt; "$(TargetDir)testbuild"
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IF EXIST "$(ProjectDir)..\CopyOutput.ps1" (
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CD "$(ProjectDir).."
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"%25WINDIR%25\system32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass -File "$(ProjectDir)..\CopyOutput.ps1"
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)</PostBuildEvent>
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</PropertyGroup>
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</Project>

‎Installer/Installer.vbproj

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<HintPath>..\packages\ini-parser.2.5.2\lib\net20\INIFileParser.dll</HintPath>
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</Reference>
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<Reference Include="Microsoft.Dism, Version=1.0.0.0, Culture=neutral, PublicKeyToken=5bba90053b345501, processorArchitecture=MSIL">
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<HintPath>..\packages\Microsoft.Dism.3.3.0\lib\net40\Microsoft.Dism.dll</HintPath>
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<HintPath>..\packages\Microsoft.Dism.3.3.12\lib\net40\Microsoft.Dism.dll</HintPath>
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</Reference>
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<Reference Include="System" />
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<Reference Include="System.Data" />

‎Installer/MainForm.vb

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Imports System.ComponentModel
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Imports System.Drawing
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Imports System.Text.Encoding
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Imports Microsoft.Win32
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Public Class MainForm
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RunBCDConfigurator("/displayorder " & TargetGuid & " /addfirst")
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RunBCDConfigurator("/default " & TargetGuid)
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' Write removal script
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File.WriteAllText(Environment.GetEnvironmentVariable("SYSTEMDRIVE") & "\$DISMTOOLS.~BT\remove.cmd",
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String.Format(My.Resources.HI_UninstallScript, TargetGuid), ASCII)
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Catch ex As Exception
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Throw
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End Try
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Try
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If TestMode Then Directory.Delete(Path.Combine(Path.GetPathRoot(Environment.GetFolderPath(Environment.SpecialFolder.Windows)), "$DISMTOOLS.~BT"), True)
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Directory.Delete(Path.Combine(Path.GetPathRoot(Environment.GetFolderPath(Environment.SpecialFolder.Windows)), "$DISMTOOLS.~WS"), True)
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If File.Exists(Environment.GetEnvironmentVariable("SYSTEMDRIVE") & "\$DISMTOOLS.~BT\remove.cmd") Then
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' Run on startup (set reg key)
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Dim RemovalAdderProcess As New Process()
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RemovalAdderProcess.StartInfo.FileName = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Windows), "system32", "reg.exe")
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RemovalAdderProcess.StartInfo.Arguments = "add " & Quote & "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" & Quote & " /f /v HotInstallDelete /t REG_SZ /d " & Quote & "cmd /c " & Quote & "%SYSTEMDRIVE%\$DISMTOOLS.~BT\remove.cmd" & Quote & Quote
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RemovalAdderProcess.StartInfo.CreateNoWindow = True
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RemovalAdderProcess.StartInfo.WindowStyle = ProcessWindowStyle.Hidden
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RemovalAdderProcess.Start()
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RemovalAdderProcess.WaitForExit()
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End If
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Catch ex As Exception
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End Try

‎Installer/My Project/Resources.Designer.vb

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‎Installer/My Project/Resources.resx

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<data name="logo_aboutdlg_dark" type="System.Resources.ResXFileRef, System.Windows.Forms">
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<value>..\resources\splashscreen\logo_aboutdlg_dark.png;System.Drawing.Bitmap, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
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</data>
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<data name="HI_UninstallScript" xml:space="preserve">
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<value>@ECHO OFF
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SETLOCAL ENABLEDELAYEDEXPANSION
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TITLE Revert Installation Changes
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IF "%1" NEQ "doit" (
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ECHO This device has rebooted to the full Windows installation. Do you want to remove the DISMTools Preinstallation Environment?
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CHOICE /C YN /M "Delete the DISMTools Preinstallation Environment BCD entries"
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REM for some stupid reason, cmd decides to evaluate errorlevel at parse time, therefore returning 0, regardless of the option chosen in choice command
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REM if we delay the expansion, the errorlevel variable is evaluated at execution time rather than parse time (but we have to put exclamation marks instead of percentage signs), allowing us to actually perform the task when the user wants
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IF !ERRORLEVEL! EQU 1 (
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REM https://stackoverflow.com/a/37669661
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ECHO This removal script will launch itself as an administrator now.
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ECHO This is because DISMTools operating system installation needs to modify system settings to revert all changes made.
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PUSHD %~dp0
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MSHTA "javascript: var shell =new ActiveXObject('shell.application'); shell.ShellExecute('%~nx0', 'doit', '', 'runas', 1);close();"
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)
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EXIT
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)
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ECHO Setting default boot entries...
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BCDEDIT /DEFAULT {{current}}
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ECHO Removing DISMTools PE BCD entry...
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BCDEDIT /DELETE {0} /F
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ECHO Removing HotInstall files...
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REG DELETE "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v HotInstallDelete /f &gt;NUL 2&gt;&amp;1
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IF EXIST "%SYSTEMDRIVE%\$DISMTOOLS.~BT" (
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RD "%SYSTEMDRIVE%\$DISMTOOLS.~BT" /S /Q
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)
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IF EXIST "%SYSTEMDRIVE%\bcdguid.txt" (
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DEL "%SYSTEMDRIVE%\bcdguid.txt" /F /Q
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)</value>
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</data>
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</root>

‎Installer/packages.config

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<?xml version="1.0" encoding="utf-8"?>
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<packages>
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<package id="ini-parser" version="2.5.2" targetFramework="net48" />
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<package id="Microsoft.Dism" version="3.3.0" targetFramework="net48" />
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<package id="Microsoft.Dism" version="3.3.12" targetFramework="net48" />
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</packages>

‎README.md

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# DT-HotInstall
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# HotInstall
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**HotInstall** is an operating system installer that prepares your computer to boot to the DISMTools Preinstallation Environment from within full Windows environments.
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5-
> [!NOTE]
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> This is in experimental stages.
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## How does it work?
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1. HotInstall copies all files of the disc image, minus the installation image (`install.wim`), to your local disk

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