The USB Device ID identifies a flash drive utilizing an Alcor Micro Corp. controller . This specific combination is highly common in generic or unbranded USB mass storage devices and is frequently associated with firmware corruption issues, such as the "No Media" or "0 MB" error. 1. Device Identification & Specifications
Apple’s macOS includes native support for USB hubs and mass storage devices bearing 058F:1234.
Unplug all other unnecessary external USB storage drives to prevent accidental formatting.
: The drive shows up in Windows Disk Management but displays "No Media" or "0 Bytes" total capacity. usb device id vid 058f pid 1234 full
If the drive isn't recognized, you may need to enter "Setup" (often the password is blank or "0000") and ensure the VID and PID are set to 058F and 1234.
The default internal test code or fallback identifier for Alcor microcontrollers. Under normal working conditions, an Alcor-driven flash drive might display a production PID like 6387 . A reading of 1234 shows the drive's custom firmware layer has failed to load. Common Diagnostic Profiles
Standard formatting tools like Windows Format, Rufus, or Diskpart will not work for this issue because they cannot communicate with a raw controller chip. You must use specialized low-level utilities. 1. Use the ChipEasy or Flash Drive Information Extractor The USB Device ID identifies a flash drive
These symptoms are often accompanied by system log entries such as:
The drive is stuck in an deep controller freeze that blocks software queries.
capacity even after a low-level format, the issue is likely hardware-related. Flash memory has a finite number of read/write cycles. Once the memory cells degrade beyond repair, the controller locks the drive into a read-only state to prevent further data loss. In these scenarios, the drive has reached the end of its lifespan and should be replaced. If you want, I can help you: : The drive shows up in Windows Disk
This comprehensive guide breaks down what this hardware ID means, why your drive is showing it, and how to completely repair the device using factory mass production tools. Understanding the Hardware ID: VID 058F & PID 1234
Some older Alcor-based card readers or OEM flash drives use this ID as their primary identifier. Troubleshooting and Drivers