Raspberry pie does not start error, number 6231b
Symptom: After power-up, LED (green) flashes repeated 4 times.
Screen: Repeat the start-up screen with a logo, and Color splash screen.
With information from the Wiki, 4 flashes: loader.bin not launched.
See below for the video of the operation RaspberryPi.
Failure to write to the SD card
I use WindowsXP.
In WindowsXP, the idea of access to the file system, seems to be different from Linux.
In Linux Administrator, is divided into "Administrator" "Safe Mode" "Computer Owner", in WindowsXP.
Also, in the OS image, are separated by some partitions.
Therefore, it is very important not to create the partitions in a partition.
In WindowsXP, depending on the environment, the writing is very complex.
Troubleshooting
After resolution, I published as solution number 6231