mount: wrong fs type, bad option, bad superblock on

amurleopard

Error:
mount: wrong fs type, bad option, bad superblock on /dev/sdb,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so.

# mount /dev/sdb /mnt
mount: wrong fs type, bad option, bad superblock on /dev/sdb,
       missing codepage or helper program, or other error

       In some cases useful info is found in syslog - try
       dmesg | tail or so.

As can seen from the error message, it is a wildcard error, could mean a number of things. One common reason is, you are trying to mount the whole block device, but there are partitions below it.

Do a quick check.

# fdisk -l /dev/sdb
Disk /dev/sdb: 64 GiB, 68719476736 bytes, 134217728 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: dos
Disk identifier: 0x000419c0

Device     Boot     Start       End   Sectors  Size Id Type
/dev/sdb1  *         2048 132120575 132118528   63G 83 Linux
/dev/sdb2       132122622 134215679   2093058 1022M  5 Extended
/dev/sdb5       132122624 134215679   2093056 1022M 82 Linux swap / Solaris

Here it shows that there are three partitions, and mounting /dev/sdb1 worked fine.