diff --git a/scripts/install.bat b/scripts/install.bat
index 6713a97..8c0577f 100644
--- a/scripts/install.bat
+++ b/scripts/install.bat
@@ -46,9 +46,12 @@ if exist "bootstrap\cache\blade-icons.php"  del /F /Q "bootstrap\cache\blade-ico
 if exist "bootstrap\cache\filament"         rmdir /S /Q "bootstrap\cache\filament"       >nul 2>&1
 REM Clear compiled Blade views (storage/framework/views/*.php)
 for %%f in ("storage\framework\views\*.php") do del /F /Q "%%f" >nul 2>&1
-REM Clear OPcache file cache from disk (opcache.file_cache=C:/tmp/php-opcache in php.ini)
+REM Detect drive letter from SCRIPTS path (works on any drive: C:, D:, E:, ...)
+for %%D in ("!SCRIPTS!") do set "SCRIPTS_DRIVE=%%~dD"
+set "OPCACHE_DIR=!SCRIPTS_DRIVE!\tmp\php-opcache"
+REM Clear OPcache file cache from disk
 REM Without this, php-cgi reads stale bytecode after restart since validate_timestamps=0
-if exist "C:\tmp\php-opcache"               rmdir /S /Q "C:\tmp\php-opcache"             >nul 2>&1
+if exist "!OPCACHE_DIR!"                    rmdir /S /Q "!OPCACHE_DIR!"                   >nul 2>&1
 echo [OK] Done.
 echo.
 
@@ -68,7 +71,12 @@ echo.
 
 REM --- [4/7] Configure OPcache ---
 echo [4/7] Configuring OPcache...
-if not exist "C:\tmp\php-opcache" mkdir "C:\tmp\php-opcache"
+if not exist "!OPCACHE_DIR!" mkdir "!OPCACHE_DIR!"
+REM Patch php.ini with the correct opcache path for this system's drive
+set "OPCACHE_DIR_FWD=!OPCACHE_DIR:\=/!"
+powershell -NoProfile -Command ^
+    "(Get-Content '!SCRIPTS!\php\php.ini') -replace '^opcache\.file_cache=.*', 'opcache.file_cache=!OPCACHE_DIR_FWD!' | Set-Content '!SCRIPTS!\php\php.ini'"
+echo   OPcache dir: !OPCACHE_DIR!
 set "SCRIPTS_BAK=!SCRIPTS!"
 powershell -NoProfile -Command ^
     "$s='!SCRIPTS_BAK!'; $action=New-ScheduledTaskAction -Execute 'cmd.exe' -Argument ('/c \"\"' + $s + '\warmup.bat\"\"'); $trigger=New-ScheduledTaskTrigger -AtStartup; $settings=New-ScheduledTaskSettingsSet -ExecutionTimeLimit (New-TimeSpan -Minutes 5) -MultipleInstances IgnoreNew; Unregister-ScheduledTask -TaskName 'MatabWarmup' -Confirm:$false -ErrorAction SilentlyContinue; Register-ScheduledTask -TaskName 'MatabWarmup' -Action $action -Trigger $trigger -Settings $settings -RunLevel Highest -User 'SYSTEM' -Force | Out-Null; Write-Host '  Warmup task registered.'"