The drive shows only a fraction of its true capacity (e.g., a 16GB drive showing 500MB).
Here is a comprehensive guide on what this tool is, where to get it, and how to use it safely.
Download a free diagnostic tool like or Flash Drive Information Extractor . Insert your broken USB drive and run the diagnostic tool.
(for other USB 2.0 models) are also available from verified technical sites like Extraction Usb Flash Drive Format Tool Ufix-Ii Download
A built-in command-line tool. Running diskpart , selecting your drive, and typing the clean command forces the removal of stubborn write-protection attributes. Conclusion
This tool is not universal. If your drive uses a Silicon Motion (SMI) or Alcor controller, UFix-II likely won't recognize it.
| Tool | Best For | Ease of Use | Low-Level Access | OS Compatibility | | :--- | :--- | :--- | :--- | :--- | | | Corrupted/reset USB drives | Very easy | Yes | Windows only | | HP USB Disk Storage Format Tool | Bootable USB creation | Easy | No | Windows | | SD Memory Card Formatter | SD cards (SDA standards) | Very easy | No | Windows/Mac | | Rufus | Bootable Windows/Linux drives | Moderate | No | Windows | | HDD Low-Level Format Tool | Physical bad sector repair | Hard | Yes | Windows | The drive shows only a fraction of its true capacity (e
Because Ufix-II is an older, specialized tool, you may not find it on major download portals. The most reliable source is often a manufacturer's support site or reputable tech forums that host archived tools. How to Download and Use Ufix-II:
: The tool can increase reserved bad blocks to solve firmware-level issues that cause drives to become read-only.
Note: Low-level formatting permanently destroys all data remaining on the chip. Ensure you have exhausted data recovery software options before proceeding. Step 1: Environmental Setup Insert your broken USB drive and run the diagnostic tool
: Can increase the "reserve bad block" count, which helps restore functionality to drives that became read-only due to excessive flash memory wear. Compatibility : Supports USB 2.0 and 3.0 drivers on Windows 7 and later. Download & Usage Information The official source for this tool is the PNY Taiwan support site
: It can update the device's internal firmware to clear persistent errors.
The drive is detected, but the computer shows 0 bytes capacity and won't open it.