Another Program ((install)) | Transmac Drive Has Been Locked By

This error appears when you try to perform an operation (like restoring a DMG, formatting a drive, or writing an image) and Transmac informs you that it cannot access the drive because some other software on your Windows PC has an exclusive lock on it.

Transmac error, drive locked, HFS+ Windows, APFS Windows, external drive locked, Transmac troubleshooting Transmac Drive Has Been Locked By Another Program

If you are a Windows user who manages Hackintoshes, repairs Mac drives, or creates macOS bootable USBs, chances are you rely heavily on Transmac , the gold-standard software for handling HFS and APFS file systems. This error appears when you try to perform

Remember the golden rule: Windows is trying to prevent data corruption. Once you identify and remove the rogue program, Transmac will work exactly as intended—writing DMGs and formatting Mac drives flawlessly. Meta Description: Stuck with the "Transmac Drive Has Been Locked By Another Program" error? Fix it now with 7 proven methods, including LockHunter, Safe Mode, and disabling Fast Startup. No data loss. Once you identify and remove the rogue program,

However, Transmac requires . It needs to talk directly to the volume’s sectors. If any other process—even a seemingly harmless one like File Explorer or an antivirus scanner—is holding a handle to the drive, Transmac sees this as a lock.

However, there is one error message that can stop your workflow dead in its tracks: .

In this long-form guide, we will break down exactly why this error occurs, how to fix it urgently, and how to prevent it from ever coming back. Before jumping into fixes, it’s crucial to understand the mechanics. Windows uses a file locking mechanism to prevent data corruption. If Program A is reading or writing to a drive, Windows tells Program B (Transmac) that the drive is "busy" or "locked."