How to save U disk data save Flash only letter software

Colleagues have a 2GB flash memory problem, let the author help him repair, the flash connection to the computer, identify normal, double-click the letter opened, prompted unformatted, but no matter how the format of the capacity are 0MB.

Fault analysis

Because the computer can normally identify flash memory, the initial estimate of Flash is not physically damaged. However, executing the format command under DOS cannot be formatted, indicating that the disk format is raw and 0 tracks are corrupted. So the author decided to first determine the main control chip flash memory manufacturers and models, and then use the manufacturer's mass production tools to repair.

Fault resolution

Flash recognition Software "Chip Wizard" Chip Genius version 3.01 view flash details, the flash chip manufacturer is MICIV (Maike Micro), the chip model is MW6208. Search on the Internet to maike micro-MW6208 mass production repair tool, after decompression open, can identify flash, but click "Start all" after the error, download different versions of the MW6208 mass production repair tools are so, it seems to identify the wrong.

Carefully open the flash memory, carefully observe the flash particles, did not find pin virtual welding, fracture and other physical problems. Another look at the chip label, it is not "chip Elf" Chip Genius recognized MW6208, but MW8209. Re-surfing the internet to find MW8209 mass production tools, identify the flash, the completion of mass production operations, exit the mass production tool, prompted the "Restart the computer", reboot after the display has been upgraded to the latest version. As a result of flash memory bad block, lost part of space, only 1897MB of space, but the loss is not too large. It appears that the flash memory part of the bad block can not be normal access to the computer or can not be read correctly, mistakenly reported as "raw format disk."

Flash failure of the above, if the repair software error, you can suspect that the identification software does not correctly identify the type of flash memory, if feasible, it is recommended to open the flash Shell to watch the chip model and download the corresponding tool-see is real.