No fsck!  'man fsck' works... # fsck /dev/sdb bash: fsck: command not found [root@localhost rgm]# man fsck [root@localhost rgm]# dnf whatprovides fsck Last metadata expiration check: 2:12:23 ago on Wed 26 Sep 2018 07:28:29 PM EDT. util-linux-2.32.1-1.fc29.armv7hl : A collection of basic system utilities Repo        : @System Matched from: Filename    : /usr/sbin/fsck util-linux-2.32.1-1.fc29.armv7hl : A collection of basic system utilities Repo        : fedora Matched from: Filename    : /usr/sbin/fsck [root@localhost rgm]# dnf install util-linux Last metadata expiration check: 2:13:38 ago on Wed 26 Sep 2018 07:28:29 PM EDT. Package util-linux-2.32.1-1.fc29.armv7hl is already installed, skipping. Dependencies resolved. Nothing to do. Complete! ls /usr/sbin/fs* /usr/sbin/fsadm        /usr/sbin/fsck.ext3   /usr/sbin/fsck.ntfs /usr/sbin/fsck         /usr/sbin/fsck.ext4   /usr/sbin/fsck.vfat /usr/sbin/fsck.btrfs   /usr/sbin/fsck.fat    /usr/sbin/fsck.xfs /usr/sbin/fsck.cramfs  /usr/sbin/fsck.minix  /usr/sbin/fsfreeze /usr/sbin/fsck.ext2    /usr/sbin/fsck.msdos  /usr/sbin/fstrim ================ works fine from console, logged in as root.