Acronis Migrate Easy 7.0 - User Guide Bedienungsanleitung PDF herunterladen (Seite 38)

Appendix A Hard disks and BIOS setup

Appendix B. Partitions and file systems

B.1 Hard disk partitions

The mechanism that allows you to install several operating systems on a single PC

or to carve up a single physical disk drive into multiple “logical” disk drives is called

partitioning.

Partitioning is performed by special applications. In MS-DOS and Windows, these

are FDISK and Disk Administrator.

Acronis offers a special application suite that will handle disk administration tasks. This

product is Acronis Disk Director Suite. It includes disk partitionin

, multibootin

, partition

recovery and other disk management applications.

Partitioning programs perform the following:

• create a primary partition

• create an extended partition that can be split into several logical disks

• set an active partition (applied to a single primary partition only)

Information about partitions on a hard disk is stored in a special disk area – in the 1

sector

of cylinder 0, header 0, which is called the partition table. This sector is called the master boot

record, or MBR.

A physical hard disk mi

ht contain up to 4 partitions. This limit is forced by the partition table

that is suitable for 4 strings only. However, this does not mean you can have only 4 operatin

systems on your PC! Actually, existin

applications called disk mana

ers support far more

operating systems on disks. For example, Acronis OS Selector enables you to install up to 100

operating systems!

B.2 File systems

An operating system gives the user the ability to work with data by supporting some

type of file system on a partition.

All file systems are made of structures that are necessary to store and manage

data. These structures are usually composed of operating system boot sectors,

folders and files. File systems perform the following basic functions:

• track occupied and free disk space (and bad sectors, if any)

• support folders and file names

• track physical location of files on disks

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Acronis Migrate Easy 7.0 - User Guide Bedienungsanleitung Seite 38