Format Pen Drive (PD) or USB Drive on Ubuntu from Terminal

To format a Pend drive from terminal use following steps:
1. First of all connect your pen drive to computer and type the below command for know the name of your  USB drive.

$ dmseg  | tail

It will generate output as follows:


[20940.808432]  sdb: sdb1

[20940.811241] sd 7:0:0:0: [sdb] Attached SCSI removable disk

2. Now unmount your pen drive using the following command:

$ sudo umount /dev/sdb1

3. Then enter the following command to format your pen drive with FAT32 partition.

$ sudo mkfs.vfat -n 'Ubuntu' -I /dev/sdb1