Transmac Drive Has Been Locked By Another Program Hot Now

Check your computer’s BIOS/UEFI settings to ensure there are no strict security settings preventing writes to USB devices. 5. Format on a Mac (If Available)

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

Antivirus programs immediately lock unrecognized file formats like Mac DMG partitions. Open the Start menu and type .

Unlocker is a lightweight third-party utility designed specifically for handling locked files and drives. transmac drive has been locked by another program hot

Before diving into solutions, it’s crucial to understand that TransMac operates at a low level. It bypasses Windows’ native file system drivers to read HFS+ and APFS. When Windows (or another background program) claims ownership of the disk—even if just for scanning, indexing, or quick access—TransMac cannot obtain the necessary permissions to write or modify the drive.

Security programs aggressively scan newly inserted USB drives for malware. Temporarily disable your antivirus software or pause real-time scanning before using TransMac.

Bring the drive back to Windows and retry the TransMac operation. Summary Checklist Run TransMac as Administrator. Close Explorer and background apps. Run diskpart -> clean . Reformat the drive using Disk Utility (Mac). Check your computer’s BIOS/UEFI settings to ensure there

Right-click the or executable file. Select Run as administrator . Confirm the User Account Control (UAC) prompt. Step 2: Use Windows PowerToys File Locksmith

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

: Highly recommended. It is open-source, modern, and automatically bypasses Windows filesystem locks to flash DMG files directly to USB. Type diskpart and press Enter

Creating a macOS bootable installer on Windows is a lifesaver, but seeing the or "Drive is locked by another program" error in TransMac can bring your progress to a halt. This usually happens because Windows is protecting the drive from the low-level changes TransMac needs to make.

TransMac "Drive Has Been Locked by Another Program" (HOT FIX)

Type clean and press . This command obliterates all partition structures and breaks any software locks. Type exit to close Diskpart.

You are trying to flash a macOS installer or access a DMG file, but TransMac stops you. The error message means Windows or a background process has seized exclusive control of your USB drive.

Type list disk to see all connected drives. (look at the size—don't pick your hard drive!).