Question

A newly attached external drive fails to mount. Running 'mount /dev/sdc1 /mnt/backup' returns: 'mount: /mnt/backup: wrong fs type, bad option, bad superblock on /dev/sdc1, missing codepage or helper program, or other error.' The device shows up in 'lsblk', and the partition is healthy. You suspect the kernel does not know how to handle this partition's filesystem. Which command sequence BEST identifies the actual filesystem so you can mount it correctly?

Accepted Answer

Run 'blkid /dev/sdc1' to read the filesystem type, then mount with 'mount -t <type> /dev/sdc1 /mnt/backup', installing any needed userspace helper (e.g., ntfs-3g, exfatprogs)

Answer

Run 'fsck -y /dev/sdc1' to repair the superblock, then retry the mount with default options

Answer

Run 'parted /dev/sdc1 print' to recreate the partition table, then reformat with 'mkfs.ext4 /dev/sdc1'

Answer

Run 'dd if=/dev/zero of=/dev/sdc1 bs=512 count=1' to clear the boot sector, then mount normally