Compressing volumes is a unique intelligent disk partitioning function of Vista.At the time of purchase, the vista system of some computers is pre installed without partitioning the disks. At this time, compressed volumes are needed.After the original size of disk C is calculated and compressed intelligently, the remaining disk partitions can be formatted and named as disk D, or divided into several partitions marked with disks D, E, F, etc.Compressing a volume does no harm to the contents of the disk.However, please do this when no software is running after the machine is started.
You use vista. Compressing a volume means squeezing out the unused space of your disk, which is usually used for partitioning.Don't touch anything in the management. It's dangerous.