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挂载内存卡，扩容 overlay 执行 mount /dev/mmcblk0 /mnt/mmcblk0 提示如下错误：NTFS signature is missing.Failed to mount \’/dev/mmcblk0\’: Invalid argumentThe device \’/dev/mmcblk0\’ doesn\’t seem to have a valid NTFS.Maybe the wrong device is used? Or the whole disk instead of apartition (e.g. /dev/sda, not /dev/sda1)? Or the other way around?mount: mounting /dev/mmcblk0 on /mnt/mmcblk0 failed: No such file or directory 通过这个帖子添加的内存卡：https://blog.csdn.net/jacob210/article/details/105443098 内存卡正常识别
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