refactor: remove old checks for upgrade/downgrade

src/playbook/Configuration/custom.yml

@@ -2,9 +2,9 @@
 title: Root Playbook File
 description: Runs all of the Playbook files
 actions:
-    # Check various conditions to see if the user should run Atlas or not
+    # Warn user if their Windows install is old
   - !powerShell:
-    command: '.\UPGRADECHECK.ps1'
+    command: '.\INSTALLCHECK.ps1'
     exeDir: true
     wait: true
 

src/playbook/Configuration/tweaks/misc/config-oem-information.yml

@@ -2,10 +2,11 @@
 title: Configure OEM Information
 description: Configures OEM information to contain the Atlas version and the Atlas Discord server
 actions:
-  - !powerShell:
-    command: '.\UPGRADECHECK.ps1 -SetVersion'
-    exeDir: true
-    wait: true
+  - !registryValue:
+    path: 'HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\OEMInformation'
+    value: 'Model'
+    data: 'AtlasOS v0.5.0 (dev)'
+    type: REG_SZ
   - !registryValue:
     path: 'HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\OEMInformation'
     value: 'Manufacturer'
@@ -21,6 +22,8 @@ actions:
     value: 'SupportPhone'
     data: 'https://github.com/Atlas-OS/Atlas'
     type: REG_SZ
+
+    # Legacy, not used for anything significant
   - !registryValue:
     path: 'HKLM\SOFTWARE\Atlas'
     value: 'WinreFallbackFixed'

src/playbook/Executables/INSTALLCHECK.ps1

@@ -0,0 +1,13 @@
+if ((Get-ItemProperty $oemInfo -Name "Model" -EA 0).Model -notlike "*Atlas*") {
+    Write-Output "Model doesn't contain Atlas, Atlas doesn't seem to be installed currently."
+    if (20 -lt ((Get-Date) - (Get-CimInstance Win32_OperatingSystem).InstallDate).Days) {
+        @"
+Windows seems to have been installed a while ago. A full Windows reinstall is highly recommended to ensure your initial install of Atlas works without problems.
+
+Atlas will install anyways, but remember this if there's issues.
+
+Follow our installation guide: https://docs.atlasos.net/getting-started/installation/
+"@ | msg *
+    }
+    exit 2
+}