Wait for the tool's multi-window grid layout interface to open before plugging in your flash drive.
: Can set the drive to a permanent "Write Protected" state to prevent accidental data deletion or virus infection.
: The chip includes an integrated 72-bit/1K BCH ECC engine , which is critical for maintaining data integrity in high-density TLC flash.
Before jumping to technical fixes, it helps to understand why your premium flash drive (such as models from Netac, Transcend, or Kingston) suddenly calls itself an "AU87101A UFDISK": au87101a ufdisk full
Look for “100% used” or “0 available”.
The exact hardware/software combination for au87101a is not publicly documented by major OS vendors, but user reports and service bulletins suggest it appears in:
⚠️ Do not unplug the USB flash drive or interrupt your computer's power cycle during this process. Reflashing takes anywhere from 5 to 45 minutes depending on the total raw capacity and physical speed of the NAND chip. Wait for the tool's multi-window grid layout interface
Create a cron job (if Linux-based) to delete files older than 30 days in temporary directories:
Click on the drive status box (it might be red or grey initially).
NEC, Fujitsu, and Nortel had PBX systems with call detail record (CDR) storage on internal flash. The ufdisk utility managed the circular buffer for billing data. Before jumping to technical fixes, it helps to
If your USB flash drive has suddenly become unrecognized, locked in read-only mode, or shows , you are likely dealing with a corrupted hardware controller. Flash drives powered by the Alcor Micro AU87101A controller often throw cryptic partitioning errors or block normal formatting attempts when their internal firmware breaks down.
– the flags vary widely.
: If the tool doesn't see your drive, you may need to manually edit the .ini file of the Alcor software to include your drive's specific Vendor ID (VID) and Product ID (PID).