Data is lost for no reason on U disk

Some friends in the use of USB memory is sometimes lost, after writing the data has been saved, but the data is missing, and the entire document is missing. But the folder is still there, what is the cause of this? Here are some answers for you:

The default set of USB drives in the normal system is optimized for quick deletion. So the U disk can be arbitrarily hot plug and unplug, there is no problem. If you specifically set up "Optimize for performance", the USB flash drive must be manually aborted by clicking on the icon in the taskbar, so it is generally not as usual to break the file as normal operation. I think there are several possible situations:

1, is reading and writing when the USB drive is unplugged

2, mistakenly deleted, here Delete but no Recycle Bin

3, there is a bad sector in the disk, just the file exists in this area

4, USB memory interface supply voltage is insufficient, resulting in a write error, that is, the error message is written to the region

5, chip performance is poor, memory effect failure.

According to the above situation can be gradually excluded, especially the final use of tool software for data recovery, and then low-level format, or to the manufacturer's website to refresh the USB flash drive BIOS, this is the last trick.