Partition an existing drive

[Bob]

Does Microsoft offer any tools to partition and existing
partioned drive? I have a C: drive at 8 GB and logical D:
drive at 20 GB. I want to partition the D: drive. Thanks

 

[Tom Swift]

The Disk Management tool can adjust partitions - but if a partition contains
data it will be lost. To repartition without data loss, you need third party
software. The easiest and most reliable (IMHO) way to go is with Partition
Magic.

Tom Swift