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1
The U disk must be formatted to FAT32 File system in advance.
Quick Format is forbidden. Any other files formations are not
supported.
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2
Recommend using a U disk with a "light indicator" to ensure if
the U disk is connected successfully with the main board
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3
When the U disk has never been able to read, try using a different
U disk.
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4
The U disk can’t be used to install system.