If the issue persists, try using a different USB port or another computer to unlock the drive, then reconnect it.
Windows often locks drives because it recognizes a corrupted partition. Clearing the partition table usually kills the lock. Press Win + R , type , and hit Enter. Type diskpart and hit Enter.
Close TransMac completely. Right-click the TransMac shortcut and select "Run as administrator" to ensure it has full system permissions. Temporarily Disable Windows Defender:
: Open Windows Security > Virus & threat protection > Manage settings and toggle Real-time protection to Off .
Type clean and press . Warning: This erases all data on the USB.
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