Partitions and volumes

The first primary partition that contains a DOS file structure (a FAT file system) is called the Primary DOS Partition for that disk. If it is on the first hard disk, it becomes the C: drive. Microsoft requires that DOS, Windows 95, and Windows NT store their bootable system files on this drive. The three Microsoft operating systems always start by loading files off the C drive.

One of the four partitions on the disk can be the Extended Partition. It can be subdivided into logical volumes. Each logical volume is assigned a disk letter and can be formatted with a file system.

The MBR identifies the location and size of the Extended Partition, but the MBR has no information about the logical volumes. An OS can be installed on a logical volume, but it cannot be booted directly from the MBR. You install a boot sector and some sort of Loader utility on one of the three Primary Partitions. Next, the MBR boots the Loader utility. The Loader utility can have information about the logical volumes and find an operating system stored in them.

Ex.10 Translate into Russian:

1. Загрузочная запись содержит ключевую информацию о диске.
2. Корневой каталог – это последняя часть системной области.
3. Таблица размещения файлов (FAT) – это набор записей, соответсвующих (to correspond) каждому кластеру не диске.

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