88 Copyright © Acronis, Inc., 2000-2010
Logical volume
A volume which is located on a basic MBR disk (p. 88) and is not a primary volume (p. 90).
Logical volumes usually store user data and sometimes the files that are used by the installed
operating systems.
Unlike the number of primary volumes, the number of logical volumes on the disk is unlimited.
A logical volume is also called a logical drive.
M
Machine
A physical or virtual computer uniquely identified by an operating system installation.
Main volume
Of two volumes being merged, the volume on which the other volume’s files and folders will be
placed.
After the two volumes are merged into one, the resulting volume has the drive letter and volume
label of the main volume.
Master boot record (partitioning scheme)
One of the two partitioning schemes of a disk. See Partitioning scheme (p. 89).
Master boot record (sector)
The first sector (p. 90) on a hard disk (p. 87).
This sector usually stores information about the hard disk partitioning (p. 89). It also stores a small
program that initiates the booting (p. 82) of the machine.
MBR disk
A disk whose partitioning scheme (p. 89) is master boot record (MBR).
MBR disks are typically used by 32-bit operating systems, such as Windows XP Professional.
Media builder
A dedicated tool for creating bootable media.
Mirror
Each of the two portions of disk space that make up a mirrored volume (p. 89).
Each mirror occupies a separate hard disk.
Both mirrors are identical in size and content, which ensures fault tolerance in case a hard disk with
one of the mirrors fails.
