Locked By Another Program - Transmac Drive Has Been

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.

: Close any open instances of Windows File Explorer , Disk Management, or other third-party disk utilities that might be monitoring the drive.

As she sat there, fuming, Emily's mind began to wander back to the events of the day. She had been working on her project all morning, and then she had taken a break to grab some lunch. When she returned to her desk, she noticed that her colleague, Ryan, was sitting nearby, typing away on his own computer.

Right-click the disk number box (left side) and select . Open TransMac and try the operation again.

As the error message explicitly mentions another program is using the file or drive, proactively closing other apps is essential. Transmac Drive Has Been Locked By Another Program

netstat -an | findstr <drive letter>

The "drive locked" error in TransMac typically occurs because Windows or a security background process (like an antivirus) is actively accessing the drive, preventing TransMac from gaining the exclusive control it needs to format or restore a disk image. Immediate Solutions

Sometimes, the issue stems from hardware-level conflicts or specific USB controllers on your motherboard.

Several common scenarios can trigger this lock: If you are trying to flash a DMG

Even if the drive is physically connected, Windows may still think it is in a "removal pending" state.

Identify your USB drive number (e.g., Disk 2) and type select disk X (replace X with your USB disk number). Type clean and press Enter. Close Command Prompt, open TransMac, and try again. 5. Temporarily Disable Antivirus/Security Software

Alternatively, if you see any open folder windows displaying your USB drive, close them immediately. Step 2: Clean the Drive via Diskpart

. This wipes the partition table, often bypassing software locks. create partition primary As she sat there, fuming, Emily's mind began

If you are trying to create a bootable macOS installer on Windows, is usually the go-to tool. However, it is incredibly common to run into the frustrating error: "The drive has been locked by another program. Please close all programs and try again."

Note: After TransMac is done, go back to Disk Management and set the drive back to . 4. Clean the Disk via Diskpart (Command Prompt)

To provide a more tailored solution, it would be useful to know: What version of Windows are you using (e.g., 10 or 11)? Are you using a USB 3.0 or 2.0 drive?

Right-click the on your desktop or start menu. Select Run as administrator . Try to format or write to your drive again. 2. Close All File Explorer Windows