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由于nand flash不能用，所以我采用sd卡启动系统，请问UBI文件系统是不是要烧到sd卡里。还是只是将dvr—rdk里面的target烤到sd卡里面就可以了
做SD卡有脚本的，需要专门的MLO和Uboot。
你先去看一下pre_build 文件夹下面是应该有SD卡用的binary的。
脚本我记得在ti_tools\linux_lsp\collaterals\collaterals\host-tools
http://processors.wiki.ti.com/index.php/TI81XX_PSP_UBOOT_User_Guide#U-Boot_SD_.28Secured_Digital_card.29_Support
怎么做sd卡在这有文档
