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xrs1@XRS:~$ sudo mount /dev/sdb1 /mnt -v
mount: you didn't specify a filesystem type for /dev/sdb1
       I will try type ext2
mount: /dev/sdb1 already mounted or /mnt busy
mount: according to mtab, /dev/sdb1 is already mounted on /mnt
xrs1@XRS:~$ ^C
xrs1@XRS:~$ umount /mnt/sdb1
umount: /mnt/sdb1 is not mounted (according to mtab)
xrs1@XRS:~$ ^C
xrs1@XRS:~$ sudo mkdir /mnt/sdb1
mkdir: cannot create directory `/mnt/sdb1': Input/output error
xrs1@XRS:~$ mkdir tst
xrs1@XRS:~$ mount /dev/sdb1 /Home/XRS1/tst/
mount: only root can do that
xrs1@XRS:~$ sudo mount /dev/sdb1 /Home/XRS1/tst/ -v
mount: you didn't specify a filesystem type for /dev/sdb1
       I will try all types mentioned in /etc/filesystems or /proc/filesystems
Trying ext3
mount: mount point /Home/XRS1/tst/ does not exist