# fdisk -l
Disk /dev/mmcblk1: 14.7 GiB, 15749611520 bytes, 30760960 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: B4ECC2D5-1FCE-496C-B1CB-C617DA06EEB5

Device                Start          End   Size Type
/dev/mmcblk1p1         2048        63487    30M EFI System
/dev/mmcblk1p2        63488     14743551     7G Linux filesystem
/dev/mmcblk1p3     14743552     29423615     7G Linux filesystem
/dev/mmcblk1p4     29423616     30760926   653M Linux filesystem

fdisk: cannot open /dev/mmcblk1rpmb: Input/output error

网上查不到怎样解决，有哪位大神帮忙看看这是什么问题造成的？怎样解决它？谢谢！

https://wenku.baidu.com/view/a0c7b45f581b6bd97f19ea81.html
参照上面讲的做，就没问题了。
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