-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 03/15/2013 01:09 PM, Stephen Warren wrote: > On 03/15/2013 12:36 AM, Sonic Zhang wrote: ... >> We can erase the first 3 blocks completely before formatting it >> again. But, nothing can prevent others from formatting the SD >> card with different tools. > > Surely any tool that creates a partition table on a device when > there wasn't any partition table there before (i.e. converts a raw > filesystem to a partition table) should zero out the "boot code" > area of that MBR, since there is no "boot code" area in a raw > filesystem. This seems like a bug in whatever partitioning tool was > used. > > If any device /always/ historically contained a real partition > table, or /always/ contained a raw FAT filesystem, then there will > be no issue. It's only when switching between the two, and not > clearing out all the data in the MBR when doing so, that you get > this problem.
To me the question is, are we looking at a "torture card" that doesn't really contain a compliant set of choices, but happens to not fail in other cases (that don't play clever games like we do) or a really valid card and we need to make a harder choice. - -- Tom -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBAgAGBQJRQ1p3AAoJENk4IS6UOR1WnqAQAKjwfCRf0o4Agn5zoEZKBiQN stPPQAbHXiIL0eHfLXfIHN13kVeM7KnN+C49jGn7s3e3y7kb3bkA/paQXcATLYIe 0oZAF0FOHJVvotuefQdZU6Nk/1flwpfNUXo0D0Lu0qQtbNnUaQwEdGy5PA4YaqkS PSRmlC/3JJHDh+bsvS9tIZBmOln1mYPJzR5VH2mnLHZbwqKN2z1hY39tPVyD0PUh 9cgcD0zhJllSr7ZgNzGXPpN6yMk36zzz2QKk6L2YzmusJYesUPiXJry1hmh/xg1R vU9TcpO3NpyxhljXzuX3soo1ED8NI/Ux0Q2Eg9SnWGJYnQkOHqAKiHgE69tOU3lF 72u1tzmXJLVEZYxKTLU9+wjoWmM2tQzXPCFVE2T2S02he801e69EPasmxfT2Jspn bqna3zCBKrsg41IUW6vXMCvWGmyxCUiPJkyq+uHv6SWDf7sgkgbLtVh/NQdhKRTH IgOmBcf4EyIcD+F0OIiZlMaqlcEG9K82O1NGRXfBI9LzeJpgco7gTyjDhrvPahxJ nH/OYJ9wnAXCl3gGiIXeoo9TxxMNMf/zACLlS6Z4fIxIoRCLvyS/tBaIGBP6Cs8k 8ckK7IU2VrT1IuCf7OS6TnEDWLWKmXOTdjoVvXRZBc2BTytj2lKZehg1es1JjWNe cb5F4wMFfMYzPApKoy3z =59H0 -----END PGP SIGNATURE----- _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot