

Next generation fake pendrivesīecause this situation can be easily revealed (just some minutes in Hard Disk Sentinel), the next generation of fake pendrives work in a more sophisticated way: all sectors could be read and written (!) so we may assume the complete capacity can be used without problems. This means that until we save about 8 GBytes (626 blocks x 12.80 MBytes), we are probably "safe" (but we can't say this for sure, there is no warranty that the files always located in the first part of the surface) but as soon as we reach this limit, data loss happens. The pendrive always disconnects when we attempt to read a sector outside the safe range Most fake pendrives always disconnect when we attempt to read a certain sector (or any sector beyond that) as we can see on the resulting disk surface map: How to diagnose and verify a possible fake pendrive?īy using the Disk menu -> Surface test -> Read test function of Hard Disk Sentinel, we can perform a complete read scan, to verify if all sectors could be read. Sometimes it can be reconnected but in other cases, the pendrive may no longer working, causing complete data loss The pendrive may be completely disconnected from the system (just like if we'd remove). The most common symptoms are:įile(s) and/or folder(s) may be not readable or damaged/corrupted: the contents of the files are empty However, when we attempt to use it for real storage of several GBytes, it may become unusable or "just" the saved data may be damaged/lost. The pendrive seems usable: we can save some data on it and generally it is working correctly. The total capacity of the pendrive seems 125 GBytes, formatted and "Healthy" according to Windows Disk Management The total capacity of the pendrive seems 125 GBytes (134,217,728,000 bytes) For example, one of such fake pendrives is identified as General UDisk device with the capacity of 125 GBytes in both Hard Disk Sentinel and in Windows Disk Management, pre-formatted as FAT32 file system:

Pendrives - need to select carefully What is a fake pendrive?Ī fake pendrive (or an above mentioned different fake storage device) shows itself as a high capacity storage (disk drive). Attempting to store (and especially backup) any data on these devices could result in complete, unrecoverable data loss, so it is better to avoid them and verify if our device(s) are real, valid and they work as expected: the complete capacity should used safely to store our valuable data. Webshops and users on auction sites frequently attempt to sell fake pendrives, fake SD cards/memory cards and even fake hard disk drives. How to: Detect fake pendrive / memory card
