Transmac Drive Has Been Locked By Another Program Hot [hot] Jun 2026
The USB drive has an existing, non-standard partition structure that Windows is struggling to relinquish control over. Proven Solutions to Unlock the Drive
The most common reason for this error is a lack of administrative privileges. TransMac needs deep system access to format drives and write raw disk images. Close completely.
Windows tends to lock drives just by browsing them. Close:
If you’ve previously accessed the drive, Windows may still be indexing it: transmac drive has been locked by another program hot
Go to . Toggle Real-time protection to OFF temporarily. Try the imaging process again in TransMac. 5. Format the Drive to FAT32 First
How to Fix "TransMac Drive Has Been Locked by Another Program"
With this information, we can isolate any specific OS environment or hardware issues affecting your setup. Share public link The USB drive has an existing, non-standard partition
: Right-click the TransMac shortcut and select Run as administrator . Without elevated privileges, the program may not be able to override existing system locks on the disk.
Safe Mode loads Windows with only essential drivers, eliminating most third-party locks.
While primarily used for Windows and Linux ISOs, changing the "Boot selection" dropdown to "All files ( . )" allows Rufus to write raw macOS images to flash drives. Close completely
Post: I’m trying to use TransMac to access a drive (external HDD/USB) but get the error: “Drive has been locked by another program.” I’ve tried disconnecting/reconnecting and restarting TransMac, but no luck. Any ideas?
Title: TransMac says “Drive has been locked by another program” — how to fix?
Some USB flash drives have controller firmware that reacts poorly to raw flashing tools on Windows. Testing with a different brand or model often resolves the issue.
Windows and macOS use completely different file systems. Windows uses NTFS or exFAT, while Mac drives use APFS or HFS+. Because Windows cannot natively read Mac file systems, it often misinterprets a Mac-formatted drive as corrupted or unallocated space.