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.
References in periodicals archive ?
Boot from the SAN," diskless server and rapid emergency boot disk recovery support using IP SAN connectivity to server farms, grids, blades and VMware-based virtual infrastructures.
When faulty patches, user errors, environmentally-induced software corruption, or other events render computers unbootable, unstable, or locked out, Recovery Manager's emergency boot environment provides unmatched speed-to-recovery.
VMware) and Blade Servers * "Boot from the SAN", diskless server and rapid emergency boot disk recovery support using IP SAN connectivity to server farms, grids, blades and VMware-based virtual infrastructures.
With this system, users can create emergency boot media specific to each system on DVD, CD, or floppy diskette.
Using a simple setup program, EasyRecovery operates directly from Windows or from an emergency boot diskette and does not need to be preinstalled prior to data loss.
The software also comes with an Emergency Boot Diskette for the recovery of data from systems that cannot boot to Windows.
Emergency boot disk creation for recovery from system failures, Windows
With BootableBackups, each full system backup can be set up to boot directly into disaster recovery mode, providing maximum data security by completely eliminating the possibility that your emergency boot media will be filed away or lost when you need it most.
If your computer BIOS supports USB booting, Pocket SuperDisk 240 can be used as an emergency boot drive in case of a hard disk failure.
Norton AntiVirus 2001 also provides a bootable CD and utility to create an emergency boot disk, allowing users to easily start up systems in the event of an emergency situation.

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