boot disk


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boot disk

(operating system)
The magnetic disk (usually a hard disk) from which an operating system kernel is loaded (or "bootstrapped"). This second phase in system start-up is performed by a simple bootstrap loader program held in ROM, possibly configured by data stored in some form of writable non-volatile storage.

MS-DOS and Microsoft Windows can be configured (in the BIOS) to try to boot off either floppy disk or hard disk, in either order. By default they first check for the presence of a floppy disk in the drive at start-up and try to use that as a boot disk if present. If no disk is in the drive they then try to boot off the hard disk.

Some operating systems, notably SunOS and Solaris, can be configured to boot from a network rather than from disk. Such a system can thus run as a diskless workstation.
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)

bootable disk

An optical disc (CD, DVD) or USB drive that contains a bootable program that takes control of the computer. Computers are typically configured to look for the OS on a CD or DVD first and then the hard disk or SSD. The computer can also be configured to look for the USB drive first, although very early computers do not have that option.

System and Data Recovery
A bootable disk is used to recover a failed system when the OS on the internal storage drive does not load. The OS on the bootable disk can be a very lightweight version of the OS running in the computer, or it may be an entirely different OS. In the past, a compact version of DOS was used.

The bootable OS must support the file system on the computer's internal drive, and it must have sufficient drivers for the peripherals used in the recovery. In addition, bootable recovery disks contain troubleshooting and repair utilities. Even if the operating system cannot be restored, the bootable disk often enables valuable data files to be copied to an external drive. See file system.

Install or Replace an OS
A bootable disk is also used to install a new operating system. In this case, it boots a small program that is able to overwrite the existing OS or install the OS from scratch. For brand new computers, it often has an option to format the storage drive. The installation program on the bootable disk has complete control of the computer. See LiveCD and ISO image.
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References in periodicals archive ?
Similar to DBAN, it requires a boot disk to run and can also wipe local hard drives while operating directly from the same computer.
When used as an ultra-fast boot disk on a system with UEFI, startup times are cut in half.
The software creates a boot disk that wipes everything on the hard drive.
Also bundled with System Suite 7 are: Recovery Commander, an advanced data recovery tool for correcting major file damage that can prevent a system from booting; a trial version of PowerDesk, the award winning file manager program that replaces Windows Explorer; and Rescue Disk, a preconfigured system boot disk for rescuing computers that are unable to properly initialize.
If you're using forward observer software (FOS), the "boot disk O: Auto 1" may need to be set differently.
They all came with Windows for Workgroups licenses, which we tossed away in favor of a floppy MS-DOS boot disk and a free form of telnet.
IPStor BareMetal Recovery minimizes server and desktop downtime by providing an IP-based boot service that continues operations in the event of a boot disk failure from a head crash, virus infection, or data corruption.
In like fashion, you should make a "boot disk," so that if your computer does crash you can start the rebuilding process by using your boot disk and back-up disks.
This is because Intel machines only support one active boot disk. Here are a few common failures that can totally cripple a Windows server or workstation: registry file corruption, installing new device drivers, deleting strategic files and a failed OS hard drive.
-- Boot Disk Builder enhancements to ensure larger numbers of DOS devices can be simultaneously deployed.
EasyRecovery Lite 6.0 can be run from Windows or alternatively from an emergency boot disk - it does not need to be installed on the machine prior to the data loss.
It's essential to be prepared by having an emergency boot disk. In the same folder as Paragon Partition Manager, you'll find a program called Diskette Build Wizard.