If you encounter this lock, follow these troubleshooting steps in order: 1. Run as Administrator
Check your taskbar to ensure no folder windows are minimized. Return to TransMac and retry the operation. 3. Disable Third-Party Antivirus Software
If the drive is still locked, a hidden background process is responsible. You can force it to release the drive. Press to open the Task Manager .
Before diving into the fixes, it helps to understand what is happening behind the scenes. TransMac requires to your USB hardware to write the Mac-compatible DMG file system. It cannot share the drive. The error triggers when any of the following Windows features are interacting with the USB: Windows Explorer holding open a directory view. Disk Management actively updating the partition tables. Transmac Drive Has Been Locked By Another Program
TransMac requires substantial system access to interact with raw disk partitions. If you run it without elevated permissions, it won't be able to bypass standard Windows file protections, leading to the "locked" error .
Since "Transmac Drive Has Been Locked By Another Program" is a common technical error message rather than a product title, I have interpreted your request as a review of the
Transmac provides an "Ignore" button when the lock error appears. According to Transmac documentation, pressing "Ignore" forces the software to attempt the operation despite the lock. If you encounter this lock, follow these troubleshooting
TransMac is a powerful Windows application designed to bridge the gap between operating systems. It allows users to read, write, and format Mac disks, including hard drives, flash drives, and CD/DVD media on a Windows PC . It's a go-to tool for creating macOS bootable USB drives from DMG files and accessing HFS+ or APFS formatted drives.
trying to sync or back up the external drive. Step-by-Step Solutions to Fix the Error
Once the success message appears, type exit and close the Command Prompt. Press to open the Task Manager
Press the , type cmd , and press Ctrl + Shift + Enter to run it as administrator. Type diskpart and press Enter .
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.
: Open Windows Security > Virus & threat protection > Manage settings and toggle Real-time protection to Off .
This error happens because Windows is protective of connected storage drives. If another process is even slightly interacting with your USB drive, Windows locks it down, preventing TransMac from gaining the exclusive write access it needs.
