What should I do when I make a U-disk with the boot sector unknown?

Now, more and more users began to use a key U-disk system, compared to the traditional CD-ROM or the form of access to resources on the network, the U disk installation system seems to appear more humanized design, at least, we do not have to worry about the network media will be wrong, the media on the network whether there is a virus class problem. However, in the process of using a USB flash drive system, we will inevitably encounter problems, such as the small series below to talk about, U-disk when prompted to guide the sector is unknown, how can we solve it?

1. The first reason, causing the boot sector unknown situation, is the disk partition, a lot of friends in order to facilitate the management of files, all like to drive the disk partition, although a lot of convenience, but it is not necessarily perfect. If this is the case, you can use the partitioning tool to restore the partition.

2.U disk chip problems, this is likely to cause the boot sector is unknown, we can try to find the chip Check tool online, and then try to format the USB stick or mass production, re-install.

3. See if the process of the U disk production error, such as we should choose "open" instead of "add", the best way to write the USB-HDD and so on, need to be noted.