partition and format under linux

1. Now type fdisk -l to list available drives/partitions (note which device is your flash drive Example: /dev/sdb). Throughout this tutorial, replace all instances of x with your flash drive letter. For example, if your flash drive is sdb, replace x with b.
2. Type umount /dev/sdx1
3. Type fdisk /dev/sdx
   • type p to show the existing partition and d to delete it
   • type p again to show any remaining partitions (if partitions exist, repeat the previous step)
   • type n to make a new partition
   • type p for primary partition
     • type 1 to make this the first partition
     • hit enter to use the default 1st cylinder
     • type +750M to set the partition size
     • type a to make this partition active
     • type 1 to select partition 1
     • type t to change the partition filesystem
     • type 6 to select the fat16 file system
   • type n to make another new partition
   • type p for primary partition
     • type 2 to make this the second partition
     • hit enter to use the default cylinder
     • hit enter again to use the default last cylinder
     • type w to write the new partition table
4. Type umount /dev/sdx1 to unmount the partition
5. Type mkfs.vfat -F 16 -n ubuntu810 /dev/sdx1 to format the first partition
6. Type umount /dev/sdx2 to ensure the partition is unmounted
7. Type mkfs.ext2 -b 4096 -L casper-rw /dev/sdx2 to format the second partition