Transmac Drive Has Been Locked By Another Program Hot Link

File Explorer actively polls the drive to show file contents, locking it in the process. 2. Run TransMac as Administrator

Right-click the volume(s) on that drive and choose (Warning: This erases data).

An active virus scanner is scanning the USB drive.

This is normal behavior. Windows does not natively recognize Mac file systems like HFS+ or APFS. When you plug in a Mac-formatted drive, Windows only sees an unknown partition and prompts you to format it. You should never format it when Windows asks , as that would erase all your Mac data. Simply cancel the prompt and use TransMac to access the drive. transmac drive has been locked by another program hot

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Follow these steps in order to resolve the locking issue and allow TransMac to proceed. 1. Close All File Explorer Windows

Windows Explorer is often the culprit. If you have a window open showing the contents of the USB drive, TransMac will be blocked. Close all File Explorer windows. File Explorer actively polls the drive to show

This "hot" error (occurring during active usage) usually happens because:

If software locks aren't the issue, the drive may have a corrupted partition table that is confusing Windows. Using the native Windows diskpart command can force the drive into a clean state.

The error message is a frustrating hurdle when trying to create a bootable macOS installer on Windows. This issue occurs because Windows treats the USB drive as a system resource and prevents TransMac from gaining exclusive write access. An active virus scanner is scanning the USB drive

If TransMac continues to throw locking errors despite troubleshooting, you can achieve the exact same result using alternative imaging software. is a free, open-source tool that successfully writes macOS .dmg files to USB drives on Windows without the strict locking issues common to TransMac.

Press the , type cmd , right-click Command Prompt , and choose Run as administrator . Type diskpart and press Enter .