Definition von dual-boot im Englisch Englisch wörterbuch
Having two operating systems available, such that either of them can be selected each time the computer is booted
In either situation, a dual-boot installation uses unpartitioned free space on the current or on another hard disk as the target.
The act of configuring a computer system to boot more than one operating system The name is something of a misnomer, as it is possible to boot more than the two operating systems the word "dual" implies