The reason and solution to indicate the unknown boot sector when making USB drive system disk

At present, many users will be through the U disk to install the system disk, after all, using a USB stick is relatively portable. However, a recent netizen reflected that: in the use of USB flash drive to install the system, the computer will be prompted: The boot sector is unknown, what is the matter? Small series analysis, this situation is likely to be caused by 3 reasons, the following together to see what some of the reasons cause the boot sector unknown condition, How do I fix a hint that the boot sector is unknown?

U disk

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.