Copy SD 開機片

老是在做這些開ㄐ片著得很煩....

總是覺得應該要可以用copy的.....
這個老外用beaglebone 做了示範....
http://borderhack.com/?p=1062

我也照著做了一次, 用在pandaboard 上....
dmesg看好sd card的掛載點,
之後 umount 它...
其實不 umount也沒關係, 因為怕去動到, 就umount吧...

假設是/dev/sdb

$sudo dd if=/dev/sdb of=sdbackup.img

就這樣就可以了....
有人會加上 bs=4M or bs=8M 這是在指定一次讀取的大小....
sdbackup.img這個file就算沒有, 也會自己產生

要把file燒回去就下:

$sudo dd if=sdbackup.img of=/dev/sdb

缺點是....要燒很久.....

不過是可以開機的....

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