You can also use the DiskPart utility to manage disks.
C:\> diskpart DISKPART>
By specifying its disk number (n), select the disk on which you want to create a partition.
DISKPART> list disk DISKPART> select disk n
DISKPART> create part ext
DISKPART> create part log [size=n] [offset=n] [noerr]
DISKPART> list volume DISKPART> select volume n DISKPART> remove