Manage hard drives, partitions, and volumes
diskpartSelect drives or disk
list disk
select disk <number>Select the partition to shrink
list partition
select partition <number>Shrink by 10 GB (=10,240 MB)
shrink desired=10240Create new partition in unallocated space
create partition primary size=10240Format new partition as NTFS with label
format fs=ntfs label="DATA" quickAssign drive letter to new volume
assign letter=Y