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Original question:
HI。
Ｉ ｓｅｔ ｂｏａｒｄ ｂｏｏｔ ｆｒｏｍ ｅｍｍｃ．
ｂｕｔ ｗｈｅｎ I ｗａｎｔ ｔｏ ｄｖｒ ｉｎ ｔｈｅ ｓｄ ｃａｒｄ， ｔｈｅｎ ｉ ｐｌｕｇ ｔｈｅ ｓｄ ｃａｒｄ ，ｔｈｅ ｂｏａｒｄ ｃａｎ ｎｏｔ ｂｏｏｔ ｆｒｏｍ ｅｍｍｃ，ｂｅｃａｕｓｅ ｉｔ ｔｈｉｎｋ ｔｈｅ ｓｄ ｃａｒｄ ｉｓ ｂｏｏｔ ｄｅｖｉｅｃｅ．ｈｏｗ ｃａｎ ｉ ｓｌｏｖｅ ｉｔ．（ｓｄ ｃａｒｄ ｉｓ ｅｍｐｔｙ，ｓｏ ｔｈａｔ ｈａｓ ｎｏ ｂｏｏｔ ｆｉｌｅ ｉｎ ｔｈｅ ｓｄ ｃａｒｄ）．
my boot mode is : support boot from sd ,emmc .
Hi,
can you try to set sysboot [5:0] to 000111.
Your value sets the boot order to USB -> SD card -> eMMC, you can look at "Table 29-9. Booting Devices Order" in device's TRM:
Regards,
Yordan
