A floppy disk which has on it the system files needed to start the computer. You can use such a disk to boot the computer when the hard disk has failed or some other problem prevents the operating system from working.
a disk from which you can boot your computer
a disk that you use to start the computer
A disk that you can use to start your computer. In case your hard drive is damaged or your computer has a virus, ensure that you always have a bootable disk or bootable CD available.
Bootable disk is any disk which contains boot files of the operating system and is used to boot a computer.
A disk that can be used to start your computer. In case your hard drive is damaged or your computer has a virus, make sure that you always have a bootable disk available.
For DOS and Windows, a floppy disk that can upload the OS files necessary for a computer startup. For DOS or Windows 9X, it must contain the files Io.sys, Msdos.sys and Command.com.
Same as startup disk. A disk or partition that holds the necessary program files — such as the Finder and System files contained in the System Folder —to set the Macintosh into operation. Such partitions are said to be bootable.