feat: Implement Windows 98 support

.github/workflows/install.yml

 run: | 
 run: | 
 run: | 
 run: | 
 run: | 
@@ -231,7 +231,7 @@ jobs:
           set -Eeuo pipefail
 
           case "$CALLBACK" in
-            powershell | legacy)
+            powershell | legacy | basic)
               ;;
             *)
               echo "Unsupported guest script type: $CALLBACK"
@@ -249,6 +249,7 @@ jobs:
           printf '%s\n' "$token" > "$RUNNER_TEMP/data/validation.token"
           printf '%s\n' "$token" > "$RUNNER_TEMP/oem/validation.token"
 
+          if [[ "$CALLBACK" != "basic" ]]; then
           cat > "$RUNNER_TEMP/oem/sync-log.bat" <<'BATCH'
           @echo off
           setlocal
@@ -327,6 +328,7 @@ jobs:
 
           shell.Run "cmd.exe /C echo VALIDATION_CALLBACK_FAILED^>COM1", 0, True
           VBSCRIPT
+          fi
 
           case "$CALLBACK" in
             powershell)
@@ -764,6 +766,34 @@ jobs:
           exit /B %result%
           EOF
               ;;
+
+            basic)
+              cat > "$RUNNER_TEMP/oem/install.bat" <<'BATCH'
+          @echo off
+
+          :retry
+          if not exist \\host.lan\Data\validation.token goto wait
+
+          echo TOKEN> C:\OEM\validation.result
+          type C:\OEM\validation.token >> C:\OEM\validation.result
+          echo SHARE>> C:\OEM\validation.result
+          type \\host.lan\Data\validation.token >> C:\OEM\validation.result
+          echo VERSION>> C:\OEM\validation.result
+          ver >> C:\OEM\validation.result
+
+          if exist \\host.lan\Data\validation.result del \\host.lan\Data\validation.result >nul
+          copy C:\OEM\validation.result \\host.lan\Data\validation.result >nul
+          if errorlevel 1 goto wait
+
+          goto end
+
+          :wait
+          ping 127.0.0.1 -n 6 >nul
+          goto retry
+
+          :end
+          BATCH
+              ;;
           esac
 
           echo "token=$token" >> "$GITHUB_OUTPUT"
@@ -890,6 +920,7 @@ jobs:
       - name: Install and validate Windows
         shell: bash
         env:
+          CALLBACK: ${{ inputs.callback }}
           KILL_ON_FAILURE: ${{ inputs.kill_on_failure }}
           INSTALL_TIMEOUT: ${{ inputs.install_timeout }}
           REBOOT_TIMEOUT: ${{ inputs.reboot_timeout }}
@@ -1130,6 +1161,101 @@ jobs:
               exit 1
             fi
 
+            basic_result="$RUNNER_TEMP/data/validation.result"
+
+            if [[ "$CALLBACK" == "basic" && -s "$basic_result" ]]; then
+              basic_response="$(tr -d '\r' < "$basic_result")"
+
+              oem_file="$(
+                awk '$0 == "TOKEN" { getline; print; exit }' <<< "$basic_response"
+              )"
+
+              share="$(
+                awk '$0 == "SHARE" { getline; print; exit }' <<< "$basic_response"
+              )"
+
+              version="$(
+                awk '
+                  $0 == "VERSION" { found = 1; next }
+                  found && NF { print; exit }
+                ' <<< "$basic_response"
+              )"
+
+              if [[ -z "$oem_file" || -z "$share" || -z "$version" ]] ||
+                 ! grep -Eq '[0-9]+\.[0-9]+\.[0-9]+' <<< "$version"; then
+                sleep 1
+                continue
+              fi
+
+              stop_logs
+              trap - EXIT
+
+              echo
+              echo "------------------------------------------------------------"
+              echo "Received response:"
+              printf '%s\n' "$basic_response"
+
+              if [[ "$oem_file" != "$EXPECTED_TOKEN" ]]; then
+                echo "Failed to read C:\\OEM\\validation.token."
+                echo "Expected contents:"
+                echo "  $EXPECTED_TOKEN"
+                echo "Received:"
+                echo "  ${oem_file:-empty}"
+                exit 1
+              fi
+
+              if [[ "$share" != "$EXPECTED_TOKEN" ]]; then
+                echo "Failed to read \\\\host.lan\\Data\\validation.token."
+                echo "Expected contents:"
+                echo "  $EXPECTED_TOKEN"
+                echo "Received:"
+                echo "  ${share:-empty}"
+                exit 1
+              fi
+
+              normalized_caption="${version//\(R\)/}"
+              normalized_expected_caption="${EXPECTED_CAPTION//\(R\)/}"
+
+              if [[ "$normalized_caption" != *"$normalized_expected_caption"* ]]; then
+                echo "Expected caption containing:"
+                echo "  $EXPECTED_CAPTION"
+                echo "Received:"
+                echo "  $version"
+                exit 1
+              fi
+
+              version_number="$(
+                grep -Eo '[0-9]+\.[0-9]+\.[0-9]+' <<< "$version" |
+                  head -n 1 || true
+              )"
+
+              if [[ ! "$version_number" =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
+                echo "Unexpected Windows version: $version"
+                exit 1
+              fi
+
+              build="${version_number##*.}"
+
+              if [[ ! "$build" =~ ^[0-9]+$ ]]; then
+                echo "Invalid Windows build number: $build"
+                exit 1
+              fi
+
+              if (( build < MINIMUM_BUILD )); then
+                echo "Expected build $MINIMUM_BUILD or newer."
+                echo "Received build: $build"
+                exit 1
+              fi
+
+              echo
+              echo "$DISPLAY_NAME installed successfully."
+              echo "Version: $version_number"
+              echo "Build: $build"
+              echo "OEM files: copied successfully"
+              echo "Shared folder: readable and writable"
+              exit 0
+            fi
+
             response="$(
               grep -F 'VALIDATION_RESULT=' <<< "$container_log" |
                 tail -n 1 |

.github/workflows/validate.yml

@@ -206,6 +206,39 @@ jobs:
       minimum_build: ${{ matrix.minimum_build }}
       platform: ${{ matrix.platform }}
 
+  win9x:
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - name: Windows 95
+            version: "95"
+            expected_caption: Windows 95
+            minimum_build: 950
+            platform: x86
+
+          - name: Windows 98
+            version: "98"
+            expected_caption: Windows 98
+            minimum_build: 2222
+            platform: x86
+
+          - name: Windows ME
+            version: "me"
+            expected_caption: Windows Millennium
+            minimum_build: 3000
+            platform: x86
+
+    name: ${{ matrix.name }}
+    uses: ./.github/workflows/settings.yml
+    with:
+      name: ${{ matrix.name }}
+      version: ${{ matrix.version }}
+      callback: basic
+      expected_caption: ${{ matrix.expected_caption }}
+      minimum_build: ${{ matrix.minimum_build }}
+      platform: ${{ matrix.platform }}
+
   tiny:
     strategy:
       fail-fast: false

readme.md

@@ -125,6 +125,9 @@ For a complete graphical desktop experience, see [WinBoat](https://winboat.app),
   | `vu`   | Windows Vista Ultimate    | 3.0 GB   |
   | `xp`   | Windows XP Professional   | 0.6 GB   |
   | `2k`   | Windows 2000 Professional | 0.4 GB   | 
+  | `me`   | Windows ME                | 0.5 GB   |
+  | `98`   | Windows 98                | 0.7 GB   |
+  | `95`   | Windows 95                | 0.6 GB   |
   ||||  
   | `2025` | Windows Server 2025       | 7.6 GB   |
   | `2022` | Windows Server 2022       | 6.0 GB   |

src/define.sh

@@ -95,6 +95,12 @@ parseVersion() {
       VERSION="winxpx64" ;;
     "2k" | "2000" | "win2k" | "win2000" | "windows2k" | "windows2000" )
       VERSION="win2kx86" ;;
+    "me" | "winme" | "win9x" | "windowsme" | "windows me" )
+      VERSION="win9x" ;;
+    "98" | "98se" | "win98" | "win98se" | "windows98" | "windows98se" | "windows 98" | "windows 98 se" )
+      VERSION="win98" ;;
+    "95" | "95c" | "win95" | "win95c" | "windows95" | "windows 95" )
+      VERSION="win95" ;;
     "25" | "2025" | "win25" | "win2025" | "windows2025" | "windows 2025" )
       VERSION="win2025-eval" ;;
     "22" | "2022" | "win22" | "win2022" | "windows2022" | "windows 2022" )
@@ -570,6 +576,14 @@ fromFile() {
       id="win11${arch}" ;;
     *"winxp"* | *"win_xp"* | *"windowsxp"* | *"windows_xp"* )
       id="winxpx86" ;;
+    *"winme"* | *"win_me"* | *"win9x"* | *"windowsme"* | *"windows_me"* )
+      id="win9x" ;;
+    *"win98"* | *"win_98"* | *"windows98"* | *"windows_98"* )
+      id="win98" ;;
+    *"win95"* | *"win_95"* | *"windows95"* | *"windows_95"* )
+      id="win95" ;;
+    *"winnt4"* | *"win_nt4"* | *"windowsnt4"* | *"windows_nt4"* | *"windows_nt_4"* )
+      id="winnt4" ;;
     *"winvista"* | *"win_vista"* | *"windowsvista"* | *"windows_vista"* )
       id="winvista${arch}" ;;
     "tiny11core"* | "tiny11_core"* | "tiny_11_core"* )
@@ -1038,7 +1052,7 @@ isLegacy() {
   local id="$1"
 
   case "${id,,}" in
-    "win9"* | "winnt4"* | "win2k"* | "winxp"* | "win2003"* | \
+    "win9"* | "winnt4" | "win2k"* | "winxp"* | "win2003"* | \
     "winvista"* | "win7"* | "win2008"* | "reactos" )
       return 0 ;;
   esac
@@ -1051,36 +1065,65 @@ supportsUnattended() {
   local id="$1"
 
   case "${id,,}" in
-    "win9"* | "winnt4"* | "reactos" )
+    "winnt4" | "reactos" )
       return 1 ;;
   esac
 
   return 0
 }
 
-supportsBootKey() {
+supportsXML() {
 
   local id="$1"
 
+  supportsSIF "$id" && return 1
+  supportsUnattended "$id" || return 1
+
   case "${id,,}" in
-    "win9"* | "winnt4" | "reactos" )
+    "win9"* )
       return 1 ;;
-    "win"* | "tiny"* | "core"* )
-      return 0 ;;
   esac
 
   return 0
 }
 
-supportsXML() {
+supportsSIF() {
 
   local id="$1"
 
-  supportsUnattended "$id" || return 1
-
   case "${id,,}" in
     "win2k"* | "winxp"* | "win2003"* )
+      return 0 ;;
+  esac
+
+  return 1
+}
+
+supportsACPI() {
+
+  local id="$1"
+
+  case "${id,,}" in
+
+    "reactos" )
+
+      # If the ISO is a Live-CD it will ignore ACPI signals.
+      hasSystemImage && return 1 ;;
+
+  esac
+
+  return 0
+}
+
+supportsBootKey() {
+
+  local id="$1"
+
+  case "${id,,}" in
+    "win9"* | "winnt4" | "reactos" )
       return 1 ;;
+    "win"* | "tiny"* | "core"* )
+      return 0 ;;
   esac
 
   return 0
@@ -1337,6 +1380,21 @@ getLink1() {
       sum="a93251b31f92316411bb48458a695d9051b13cdeba714c46f105012fdda45bf3"
       url="2000/5.00.2195.6717_x86fre_client-professional_retail_en-us.7z"
       ;;
+    "win9x" )
+      size=448957271
+      sum="36e75592cf89e072e165da60100f91ca59b7667be90494f1aa4a78091011cfea"
+      url="9x/me/Windows%20Me_en.zip"
+      ;;
+    "win98" )
+      size=558263127
+      sum="980bfc9abc93c3104d1a00690c5db702efda7a377de7e06cda61889a972e2e08"
+      url="9x/98/se/Microsoft%20Windows%2098%20Second%20Edition%20%284.10.2222%29.rar"
+      ;;
+    "win95" )
+      size=422127699
+      sum="5456632a73a3c70f8e5ee566374876266a81f61968e623ef5500028dec8e2979"
+      url="9x/95/Microsoft%20Windows%2095C%20%284.03.1216.osr2.5%29.zip"
+      ;;
   esac
 
   case "${ret,,}" in
@@ -1616,6 +1674,21 @@ getLink4() {
       sum="e3816f6e80b66ff686ead03eeafffe9daf020a5e4717b8bd4736b7c51733ba22"
       url="MicrosoftWindows2000BuildCollection/5.00.2195.6717_x86fre_client-professional_retail_en-us-ZRMPFPP_EN.iso"
       ;;
+    "win9x" )
+      size=523665408
+      sum="bff3e9e69e625d2fdffd01b326988c45be8b9285465a4dabbae96ac550de611e"
+      url="windows-me_202209/Windows%20ME.ISO"
+      ;;
+    "win98" )
+      size=655591424
+      sum="2adfb46df8a9c7bbd2f67bff07461cc2f9d9ec8e01f0e112cb044c9e3e62f607"
+      url="windows-98-se-isofile/Windows%2098%20Second%20Edition.iso"
+      ;;
+    "win95" )
+      size=618229760
+      sum="493212b2a3cd391269e55a8fde5ee0a35e29ddece4b5910ec49df69ab62f5e26"
+      url="win-95-osr-25_202103/Win95_OSR25.iso"
+      ;;
     "core11" )
       size=3304132608
       sum="c0e0252b24144b8defb6c7ded2bc09f9297daf1fb8369b16c5b85382331eb47f"