When you plug a USB flash drive into a computer, the operating system identifies it through a series of background processes. Typically, you see a simple drive letter. However, sometimes users encounter a more technical identification string in system tools like or Device Manager , such as "USB 大容量存储设备(NAND USB2DISK)". This label is not a product name but a generic identifier used by the system for certain types of USB flash drives.
According to Microsoft's Q&A, this identifier is . The hardware ID USBSTOR\Disk&Ven_NAND&Prod_USB2DISK indicates a generic, unbranded USB drive. Legitimate drives from reputable manufacturers (Sandisk, Kingston, Samsung, etc.) will show their own brand names instead.
The file system is corrupted. Move to Step 3. usb mass storage devicenand usb2disk full
A massive percentage of drives showing this error are purchased cheaply online (e.g., a "2TB Mini USB" bought for a suspiciously low price). These drives use hacked firmware to trick Windows into displaying a large capacity. The moment you transfer more data than the true chip size (often just 16GB or 32GB), the drive fails and locks up. How to Test Your Drive:
Corrupted drivers can cause the "USB Mass Storage Device" to behave abnormally. Press and select Device Manager . Expand Universal Serial Bus controllers . When you plug a USB flash drive into
Type chkdsk E: /f /r /x (Replace E: with the letter of your "USB2Disk"). Let the utility scan and repair the drive. Method 3: Change the File System (Convert to NTFS or exFAT)
Most devices showing "NAND USB2DISK" use controllers from . These include: This label is not a product name but
Right-click the unallocated space, select New Simple Volume , and follow the prompts to reformat it.
.png)
.webp)
