U disk Boot Sector unknown solution

U disk boot sector is unknown, this situation usually occurs when making a U disk Startup disk. We usually use soft disk to load the ISO image, occasionally prompts the "boot sector Unknown", and then the computer in the U disk startup, you can not read the disk, usually occurs in the installation of Win7, WinXP system occurred relatively few. The following take Win7 as an example, to provide you with a U disk boot sector unknown solution.

1, may be the production method has the problem, after selecting the mirror file, we should choose to "open" instead of "add", the best way to write with USB-HDD.

2, if the above method is not, you can make a PE system in the U disk, and then copy this ghost system mirror to u disk, then start the PE system of U disk, then use the Ghost system mirror to install on line.

3, may be a U disk is partitioned, or the MBR is a problem, you can use zoning tools to restore a U disk into a partition.

4, no longer, on the use of U disk chip detection tools, testing u disk, and then a U disk volume production, format processing. To install again.

5, if the above methods are useless, it may be your u disk is fake and inferior products, replace the U disk and then load mirror.

The above is a U disk boot sector unknown processing method, you can try one step at a step to verify the elimination of which part of the problem has arisen. After finding the cause of the problem, it is much simpler to find a corresponding tutorial. Believe that the above method will certainly have one for you!