Transmac Drive Has Been Locked By Another Program Hot

To resolve the "TransMac drive has been locked by another program" error, follow these step-by-step troubleshooting guides:

Close any third-party disk management tools, ISO burners, or partition managers (like Rufus, Etcher, or MiniTool).

Windows is designed to automatically mount and index any recognized storage device. Even if the drive is unformatted or uses a Mac file system, several background processes might be "touching" it: File Explorer:

Once complete, open TransMac and select . 5. Check for Active Windows Handles transmac drive has been locked by another program hot

+--------------------------------------------------------------+ | File Locksmith - X | +--------------------------------------------------------------+ | The following processes are using this drive: | | | | > Explorer.exe (PID: 4324) [ End Task ] | | > AntivirusService.exe (PID: 1102) [ End Task ] | +--------------------------------------------------------------+ Step 3: Clear the Disk via Diskpart

Type select disk X (Replace with your USB’s number, e.g., select disk 2 ). Be extremely careful here; don't select your hard drive.

You are trying to flash a macOS DMG file to a USB drive on Windows, but TransMac stops you with a frustrating error: This common issue happens because Windows or a background application is aggressively accessing your USB drive, preventing TransMac from gaining exclusive write access. Why This Error Happens To resolve the "TransMac drive has been locked

When Windows or a background process claims ownership of your USB drive, TransMac is blocked from writing data to it. Fortunately, you can resolve this conflict and unlock your drive using several proven troubleshooting methods. Why Windows Locks Your TransMac Drive

Safe Mode loads only essential drivers and services, which can help determine if a third-party application is causing the lock.

When you right-click on a locked drive or file, the Unlocker option appears. Select it to see all processes currently locking the item, then choose or "Unlock All" to release the drive. You are trying to flash a macOS DMG

If you connected your drive after launching TransMac, the program might not recognize it properly. TransMac's built-in refresh feature solves this issue.

The Windows indexing service automatically reads connected drives to catalog files, which can cause a persistent lock. Press Windows Key + R , type services.msc , and press Enter. Scroll down to find . Right-click it and select Stop . Scroll to Storage Service , right-click it, and select Stop .

If the issue persists, the USB drive may have a persistent, low-level lock. A. Use a Different USB Port

: Real-time protection often locks external drives to scan them for threats the moment they are accessed. Temporarily disable Real-time protection in Windows Security settings while you perform the restore. Clean the Drive via Diskpart

Windows does not natively support the Apple File System (APFS) or Mac OS Extended (HFS+) formats. When you plug in a Mac-formatted drive or prepare a USB for flashing, Windows often tries to read, index, or "fix" the unrecognized drive. This background activity locks the drive and blocks TransMac. Step-by-Step Solutions 1. Run TransMac as Administrator