localhost hejustrife # mount -t ntfs-3g /dev/sdb1 /media/1 NTFS signature is missing. Failed to startup volume: Invalid argument Failed to mount '/dev/sdb1': Invalid argument The device '/dev/sdb1' doesn't have a valid NTFS. Maybe you selected the wrong device? Or the whole disk instead of a partition (e.g. /dev/hda, not /dev/hda1)? Or the other way around? localhost hejustrife # mount -t vfat /dev/sdb1 /media/1 mount: wrong fs type, bad option, bad superblock on /dev/sdb1, missing codepage or other error (aren't you trying to mount an extended partition, instead of some logical partition inside?) In some cases useful info is found in syslog - try dmesg | tail or so