I had an harddisk with an unknown filesystem. The mount command without any option didn’t work, so i had to find out the filesystem.
There is one simpel command to do this:
hellmann linux # file -s /dev/sdb1 /dev/sdb1: x86 boot sector, code offset 0x3c, OEM-ID "TSD FAT ", sectors/cluster 64, sectors 976771120 (volumes > 32 MB) , FAT (32 bit), sectors/FAT 119221, serial number 0x4d1d59b, unlabeled
Now i can use the mount command with the -t option to simply mount this partition (don’t know why it doesn’t detect the filesystem automatically):
mount -t vfat /dev/sdb1 /mnt/usb