![]() ![]() In addition it may reduce power consumption, since it may allow just one device (a hard disk) to be used instead of two (hard disk plus optical drive). This may provide advantages such as speed and noise (hard disk drives are typically four or five times faster than optical drives, and also quieter). Using disk images in a virtual drive allows users to shift data between technologies, for example from CD optical drive to hard disk drive. However some software provides virtual CD/DVD drives which can produce new disk images this type of virtual drive goes by a variety of names, including "virtual burner". Virtual drives are typically read-only, being used to mount existing disk images which are not modifiable by the drive. Windows 8 includes native virtual drive functionality. Some operating systems such as Linux and Mac OS X have virtual drive functionality built-in (such as the loop device), while others such as Microsoft Windows require additional software. ![]() Typical uses of virtual drives include the mounting of disk images of CDs and DVDs, and the mounting of virtual hard disks for the purpose of on the fly disk encryption ("OTFE"). An emulated drive is typically created either in RAM for fast read/write access (known as a RAM disk), or on a hard drive. It is also used to make perfect clones of hard disks.Ī virtual disk may emulate any type of physical drive, such as a hard drive, tape drive, key drive, floppy drive, CD/ DVD/ BD/ HD DVD or a network share among others. Usesĭisk images are used heavily for duplication of optical media including DVDs, Blu-ray disks, etc. Disk images were originally used for backup and disk cloning of floppy disk media, where replication or storage of an exact structure was necessary and efficient. ![]()
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