winC2D — Windows Storage Migration Assistant

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About

winC2D is a Windows disk migration assistant that helps you move installed software and common user folders from your C drive to another disk. It also lets you change the system default installation path and user folder locations — freeing up C drive space without reinstalling anything.

⚠️ Important Notes

After migrating software, winC2D creates symbolic links (symlinks) at the original paths so they remain accessible. Most migrated software will continue to work from its new location without modifying the application or its shortcuts. Standard migration does not touch the registry.

The "Change default install location" option in Settings does modify the system registry to redirect where new apps are installed. If issues arise, restore the default value in Settings or roll back via a system restore point / backup.

Features

• 📦 Scan installed software on C drive with size and status columns; select multiple entries for batch migration
• 📁 Scan and migrate common user folders (Documents, Pictures, Downloads, etc.)
• 🖱️ Graphical target path picker with auto-populated drive drop-down
• 🔗 Symlinks created automatically after migration to preserve original paths
• ↩️ Rollback support with full migration log
• 🌏 In-app language switching — 7 languages supported
• 🌙 Dark / Light theme follows system, switchable manually
• 🛡️ Automatically requests administrator elevation on launch
• 🤖 MCP Server mode — expose all migration capabilities to AI agents via the Model Context Protocol

Tech Stack

• C# · .NET 8.0 · WPF
• WPF-UI (Fluent Design)
• CommunityToolkit.Mvvm · Microsoft.Extensions.DependencyInjection
• ModelContextProtocol SDK (MCP Server mode)

Download & Run

1. Download the latest release from Releases

   Version	Size	Use Case
   Standalone (-standalone.exe)	~70–80 MB	⭐ Recommended — includes .NET 8 runtime, works immediately
   Framework-Dependent (-framework-dependent.exe)	~10–15 MB	Requires .NET 8 Runtime pre-installed

2. Run as Administrator (the app will prompt for elevation automatically)

3. Requires Windows 10 / 11

MCP Server Mode (for AI Agents)

winC2D v4.0 ships a built-in MCP (Model Context Protocol) server so that AI agents (Claude, GitHub Copilot, etc.) can scan software and drive space, then perform migrations autonomously.

Available MCP Tools

Tool	Description	Requires Elevation
get_privilege_status	Check current privilege level and available operations	No
get_disk_info	List all fixed drives with free/total space	No
scan_software	Stream all installed software with size and migration status	No
migrate_software	Move software to another drive with symlink + optional dry-run	Yes
get_task_status	Poll migration progress by taskId	No
rollback_migration	Restore software to original path	Yes
list_migrations	List all migration tasks in the current session	No

Agent Workflow

get_privilege_status → get_disk_info → scan_software
  → migrate_software(dryRun=true)    # validate first
  → migrate_software(dryRun=false)   # get taskId
  → get_task_status (poll every 3-5s until Completed/Failed)
  → rollback_migration (optional)

Privilege Requirements

Creating symbolic links requires either Administrator rights or Windows Developer Mode.

Privilege Level	Scan	Migrate
Administrator	✅	✅
Developer Mode	✅	✅
Restricted	✅	❌ (returns structured error with fix instructions)

Enable Developer Mode: Settings → System → Developer Options → Developer Mode

Claude Desktop Configuration

{
  "mcpServers": {
    "winC2D": {
      "command": "C:\\path\\to\\winC2D.exe",
      "args": ["--mcp"]
    }
  }
}

Note: The process must run with symlink privileges. Options:

• Start Claude Desktop as Administrator, or
• Enable Windows Developer Mode (recommended — permanent, no UAC prompt), or
• Use gsudo: "command": "gsudo", "args": ["C:\\path\\to\\winC2D.exe", "--mcp"]

VS Code / GitHub Copilot Configuration

Add to your VS Code settings.json:

{
  "mcp": {
    "servers": {
      "winC2D": {
        "type": "stdio",
        "command": "C:\\path\\to\\winC2D.exe",
        "args": ["--mcp"]
      }
    }
  }
}

Contributing

Pull requests are welcome! For major changes, please open an issue first.

License

MIT