What is a boot disk?

Inserting or running a computer means starting its start, during which the operating system is loaded into memory. This is generally done by pressing the button on the computer itself, when the computer turns on from the inner hard drive. The term boot drive , also boot disk, is usually used to refer to a built -in unit from which the computer normally shoes, but on a removable storage medium on which the operating system is stored and from which the computer can be triggered, if necessary. Since computers can be designed to start from their own hard disk, they may require a specific instructions from the keyboard to run from the boot disk. To start running, it must contain an operating system that is suitable for the computer. For example, you cannot release Windows computer with a bootable disk that holds the Macintosh operating system. One type is LiveCD or LiveDVD. This applies to the version of the operating system that runs without having to installt. In addition, there are specialized boot drives for sale.

Boot disk can have several functions, depending on what is installed on it if something except the operating system. The boot disk can be used when the computer cannot introduce from the inner hard disk or when this internal hard drive needs a fix. In this case, introduction from an external source allows the user to run a disk repair tool that can be able to repair the internal hard drive and allow it to restart. A boot disk can also be used in attempts to recover data. If the computer's hard drive fails, data recovery may be required, the computer is damaged or for other reasons.

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boot disk is also a mechanism for making changes to the operating system. The boot disk can be used to perform the initial installation of the operating system on the computer. Can also be used to reinstall the operating systemU, which could be necessary if, for example, a need to safely delete the data in the system before selling or freeing the computer. It can also be used to replace the operating system, ie upgrade it to a newer version or deliver it to the previous version.