问题一：创建分区时报错
Re-reading the partition table failed.: Device or resource busy
Command (m for help): w The partition table has been altered. Calling ioctl() to re-read partition table. Re-reading the partition table failed.: Device or resource busy The kernel still uses the old table. The new table will be used at the next reboot or after you run partprobe(8) or kpartx(8).问题二：格式化时报错
/dev/sdc1 is mounted; will not make a filesystem here!
sudo mkfs.ext4 /dev/sdc1 mke2fs 1.42.13 (17-May-2015) /dev/sdc1 contains a ext4 file system last mounted on /home/data on Thu Oct 31 16:30:41 2019 Proceed anyway? (y,n) y /dev/sdc1 is mounted; will not make a filesystem here!解决办法：卸载挂载
命令：
umount /dev/sdc1
然后重新分区、格式化即可；
