The virtual disk can again be implemented using split or monolithic files, except that storage is allocated on demand.

Areas of hard drive can be assigned a label as if they were a virtual disk.

Build 4560, released on July 17, 2007, added an imaging tool which allowed users to add capacity to their virtual disks.

Other terms that are used to mean the same thing are partition, logical volume, and in some cases a virtual disk (vdisk).

Such machines create and capture the output of a virtual "account" inside a virtual disk.

One can install programs inside it that will be sandboxed from the entire system, existing only inside the virtual disk.

And that's the notion of a fixed-size virtual disk versus an expandable or expanding one.

Then you'd create a virtual disk which is one single large contiguous piece of hard disk space in the hosts file system.

The majority of publicly available encryption programs allow the user to create virtual encrypted disks which can only be opened with a designated key.

Fixed hard disk image: a file that is allocated to the size of the virtual disk.