Use a tool like or UltraISO to burn the ISO file onto a USB drive. Set the write method to USB-HDD+ .

When MHDD loads, it will list all connected drives. Type the number corresponding to the drive you want to scan and hit Enter (e.g., [3] for the third drive). 2. Run Diagnostics (Scan) Press to start the scanning process. Settings:

Slow sectors, indicating potential future failure.

Because MHDD 4.5 is a DOS-based tool, you cannot install it simply as a .exe file in Windows. You need a bootable medium. Where to Download