将tf卡插入对应卡槽(如图)
找到这个tf卡的节点 -- 我这里的节点是 mmcblk0
rk3588s_t:/dev/block # ls
by-name dm-5 loop10 loop2 loop8 mmcblk1boot1 mmcblk1p14 mmcblk1p6 ram1 ram15 ram7
dm-0 dm-6 loop11 loop3 loop9 mmcblk1p1 mmcblk1p15 mmcblk1p7 ram10 ram2 ram8
dm-1 dm-7 loop12 loop4 mapper mmcblk1p10 mmcblk1p2 mmcblk1p8 ram11 ram3 ram9
dm-2 dm-8 loop13 loop5 mmcblk0 mmcblk1p11 mmcblk1p3 mmcblk1p9 ram12 ram4 vold
dm-3 loop0 loop14 loop6 mmcblk1 mmcblk1p12 mmcblk1p4 platform ram13 ram5 zram0
dm-4 loop1 loop15 loop7 mmcblk1boot0 mmcblk1p13 mmcblk1p5 ram0 ram14 ram6
写入命令
dd if=/dev/zero of=/dev/block/mmcblk0 bs=4M count=64 && sync
效果
读取命令
dd if=/dev/block/mmcblk0 of=/dev/null bs=4M count=64
效果