Transmac Drive Has Been Locked By Another Program [exclusive] <COMPLETE ✧>

Type list disk and press . Identify your USB drive number by looking at the storage capacity (e.g., Disk 1 or Disk 2). Warning: Selecting the wrong disk will erase your data.

Ensure programs like Rufus, Etcher, or partition managers are closed. 3. Clean the Drive Using Diskpart

Sometimes, the specific USB port configuration or controller hub causes a software hang. Unplug your USB drive.

Sometimes TransMac struggles to overwrite a drive that contains an active NTFS partition. Formatting the drive to a neutral format first can break the lock. Open in File Explorer. Right-click your USB drive and select Format . Change the File System dropdown to exFAT or FAT32 .

: A popular open-source tool for flashing OS images to USB drives. Transmac Drive Has Been Locked By Another Program

The error indicates TransMac (or another application) cannot access a drive or disk image because some other process has an open handle or lock on it. Common targets: physical USB drives, external HDDs/SSDs, or DMG/ISO files.

Releases any active handles the OS has on the drive's file system.

Open TransMac (as administrator) and try to format the drive as or burn your DMG image immediately. 4. Format the Drive to FAT32 First

If the troubleshooting steps didn't resolve the issue, try the following solutions: Type list disk and press

Other formatting or backup software running tasks. Step-by-Step Solutions to Fix the Error 1. Run TransMac as an Administrator

To avoid encountering this error in the future, always insert your USB drive, close any automatic pop-ups from Windows, and launch TransMac as an administrator before interacting with the drive. If the drive continues to fail across multiple computers, the flash drive itself may have hardware degradation or write-protection issues. To help troubleshoot further, let me know:

Windows Defender or third-party antivirus programs often block low-level disk modifications to prevent malware.

port instead of 3.0, as some older DMG writing processes are more stable on 2.0. Trial Expired Ensure programs like Rufus, Etcher, or partition managers

If you are trying to flash a DMG file to a USB drive and see the error you aren't alone. This usually happens because Windows is aggressively "protecting" the drive or another background process is scanning it the moment you plug it in.

How to Fix "TransMac Drive Has Been Locked by Another Program" Error

Temporarily disable in Windows Security.

TransMac is a necessary evil for the Hackintosh community. The "Drive Locked" error is a significant annoyance, but it is not a fatal flaw in the software—it is usually a result of modern Windows security architecture clashing with legacy disk writing methods.

Always ensure TransMac is running with elevated privileges. Right-click the TransMac icon and select . If the program was already open, close it and restart it this way. 2. Disable Security Interferance Windows Defender is a frequent culprit for "Locked" errors.

Fix: TransMac Drive Has Been "Locked By Another Program" Encountering the or "could not access disk" error in TransMac is a common roadblock when creating a macOS bootable USB on Windows. This usually happens because Windows processes—like security software or the File Explorer—are actively "hooked" into the drive, preventing TransMac from gaining the exclusive access it needs to format or write to the media.