The proper text for the error message is likely one of the following, depending on the exact system (typically older Alcatel-Lucent or telecom equipment):
Standard Windows formatting tools cannot fix controller-level errors. You need the
If you've plugged in a USB drive and seen "Product=AU87101A UFDISK" appear in your system information, you're using a USB flash drive built around a specific controller. This identifier, often displayed in system logs or device information tools, reveals the manufacturer of the chip that manages your device. This string is not a brand name but a technical detail about the controller. The "AU" series is a family of controllers produced by Alcor Micro, a well-known Taiwanese company that designs USB chips. Alcor produces a wide range of controller models, and the AU87101A is one of their standard models, commonly found in inexpensive, generic USB flash drives from various brands. au87101a ufdisk full
When a USB drive fails with errors like "UFDisk Full" or "No Media," it is rarely the memory chip that has died; it is usually a corruption of the controller's firmware. The controller has entered a "safe mode" or has lost its partition table information, causing Windows or macOS to misinterpret the drive's capacity and status.
A long alphanumeric string (e.g., 2C 64 44 4B ) that identifies your physical storage memory brand like Samsung, SanDisk, Toshiba, or Micron. 3. Finding the Right Software: AlcorMP The proper text for the error message is
Contact the original equipment manufacturer (OEM) and provide them with:
GParted (the GNOME Partition Editor) is a graphical tool that can also handle many partition table corruptions. Simply delete all existing partitions on the drive and create a new one. This string is not a brand name but
Linux:
Here is a detailed breakdown of why this happens and how to flash your drive back to life. 1. Why is this happening? is a controller chip manufactured by Alcor Micro