Ufdisk — Au87101a

Bus 001 Device 003: ID 058f:8710 Alcor Micro Corp. UFDISK In this mode, no /dev/sdX node is created because the drive does not report a valid SCSI/UFI command set until firmware is loaded. To restore a functional USB drive from UFDISK mode:

Device Descriptor: VID = 058F PID = 8710 Manufacturer: Alcor Micro Product: UFDISK Serial Number: (varies) au87101a ufdisk

1. Overview AU87101A is a single-chip USB 2.0 flash drive controller manufactured by Alcor Micro, Corp . It is commonly found in budget-friendly USB thumb drives, often rebranded under generic labels (e.g., "JetFlash," "DataTraveler" clones, or unbranded OEM drives). The term UFDISK (USB Flash DISK) is a device identifier string that appears when the controller enumerates on a host system, especially in mass production mode or firmware update mode . Bus 001 Device 003: ID 058f:8710 Alcor Micro Corp

For data recovery: If a previously working drive shows up as UFDISK, do run MP Tool immediately – the NAND may still contain user data. Seek professional help or attempt NAND reading via specialized hardware (PC3000 Flash, Rusolut). Last updated: 2025 – Based on USB controller analysis and mass production tool behavior. Overview AU87101A is a single-chip USB 2