查看磁盘分区UUID

# blkid /dev/sdc1
/dev/sdc1: LABEL="imx8" UUID="d78f429a-79bc-41f8-83b8-70bbcc3ea0ba" TYPE="ext4" PARTUUID="a5bc72c6-01

# ls -l /dev/disk/by-uuid/
总用量 0
lrwxrwxrwx 1 root root 10 7月  22 08:49 4db774f4-2edb-4605-be53-f758c3c6f146 -> ../../sda1
lrwxrwxrwx 1 root root 10 7月  22 08:49 7b14bfc2-9bdc-43f7-aa47-10193384bf2c -> ../../sdb1
lrwxrwxrwx 1 root root 10 7月  22 08:49 d78f429a-79bc-41f8-83b8-70bbcc3ea0ba -> ../../sdc1
lrwxrwxrwx 1 root root 10 7月  22 08:49 ef472e1f-3391-46f1-941d-8556c5901197 -> ../../sda5
lrwxrwxrwx 1 root root  9 7月  22 08:49 f789c494-adc6-4500-a8ca-d3f071f0fb85 -> ../../sdb

修改磁盘分区UUID

# tune2fs -U d78f429a-79bc-41f8-83b8-70bbcc3ea0ba /dev/sdc1

产生一个UUID

$ cat /proc/sys/kernel/random/uuid 
d938c831-51ac-4695-a160-c8d36c8f17fc

修改磁盘分区卷标

# e2label /dev/sdc1 imx8