Written in ubuntu burn uboot to the sd card and found program can not run normally on board, but the use of sdflasher can, want to ask you what is the cause of the problem? Also found that data stored in sd card. Bin file is not the same as the way of data storage, figure 1 is the data on the sd card, is shown in figure 2. Bin file data, my personal understanding should be the size of the problem, this will affect you?