format a disk to fat32 on raspberry pi or linux

—— part 1 ——-
create partitions
1) get list of disks
# fdisk -l
2) Find disk in list, /dev/???
in this example /dev/sda
3) run fdisk again and specify disk
# fdisk /dev/sda
4) print current partiions
Command (m for help): p
5) use the d command to delete any of the existing partitiond
Command (m for help): d
you may have to run this multiple times if there is more that 1 partition.
6) print current partiion list again, to make sure its empty
Command (m for help): p
7) Use the o command to create a new DOS partition table
Command (m for help): o
8) use the n command to create a new partition
Command (m for help): n
accept all defaults
9) use the t command to change the partition type
Command (m for help): t
use the hex code b to select W95 FAT 32
10) use the w command to write changes to disk.
Command (m for help): w
—– part 2 ———-
create filesystem
1) mkfs -t vfat /dev/sda1