We will be doing this using fdisk again, as shown in the following screenshot:

Your disk may come with a number of partitions, as shown here:

First, we must get rid of any existing partitions using the o command, as shown in the following screenshot:

Now that we have removed the unwanted partitions, we can create our own using the n command:

Select a partition and modify its type using the t command and specify the partition number and type code. Then, use the p command to get the new proposed partition table, as shown here:

Use the w command to permanently save the changes to the /dev/sda disk: