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The physical format of MRW on the disk is managed by the drive's firmware, which remaps physical drive blocks into a virtual, defect-free space. Thus, the host computer does not see the physical format of the disk, only a sequence of data blocks capable of holding any filesystem .
Virtual disk and virtual drive are software components that emulate an actual disk storage device.. Virtual disks and virtual drives are common components of virtual machines in hardware virtualization, but they are also widely used for various purposes unrelated to virtualization, such as for the creation of logical disks,software development, testing environments, and data management.
Hitachi-LG Data Storage (HLDS, HL-DT-ST or H-L Data Storage), a 51-49 joint venture between Hitachi, Ltd. and LG Electronics, [2] is a manufacturer of DVD and Blu-ray optical disc drives [3] for desktop computers and laptops. Founded in late 2000, the company began operation in January 2001. [4] In 2006, HLDS began developing Blu-ray Disc ...