USB Flash drive recognized within lsusb but not in fdisk

While on my way to format the Transcend flash drive, i went through the normal procedure to format an external usb storage.

I executed my command to check it's showing within the kernel or not.

# lsusb

and i found it as

Bus 002 Device 005: ID 066d:c09d Transcend Information, Inc. JetFlash

but when i executed the command fdisk -l  i couldn't find any extra drive as /dev/sdd as i already have three hardisk as /dev/sda, /dev/sdb, /dev/sdc

I figured out the error can be resolved using the command.

[root@localhost]#  modprobe usb_storage

and all fixed within this cammand at all.