Create and burn bootable disc.
Using Evolution you can create a bootable disc with which the computer can be started without having to access the hard drive. For this reason a bootable CD is often used as an "emergency disc" to start the computer if it is not possible to access the hard drive.
Bootable discs are created in accordance with the "El Torito" standard, an extension to the ISO-9660 standard, which defines the structure of data discs. The CD contains a boot image and an ISO part. The boot image contains all files that are required to load the operating system and to start the computer. The ISO part can contain any number of data files that you can back up using this method.
To ensure that a computer can boot from disc, the start sequence must be set in the BIOS of the computer in such a way that the drive is addressed first as the boot drive (start sequence CD-ROM, C, A for instance). In the case of a SCSI CD-ROM drive, this must be connected to a SCSI adapter with a separate BIOS whose settings can be modified accordingly. (This will only work when there are no IDE hard drives present as these precede the SCSI adapter in the boot sequence).
When booting from a disc, you can only start an operating system that does not write to the disc, such as "MS DOS" or "Linux". During booting Microsoft® Windows® 2000 and Microsoft® Windows® XP write to the disc from which they are being booted. This is not possible with a disc and so the process is canceled and the PC cannot be started.
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