
20 EFS Systems on a Linux Base: Getting Started
2.2.5 Dual boot, alternate boot
Dual boot means that two (or more) operating systems are present on a bootable disk.
Typically, a small program is loaded when the system is booted, and this program allows the
user to select which of the main operating systems to load.
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Alternate boot, in the context used here, means to boot from an alternate hard disk in an
Ultrabay slot. With a ThinkPad you can, for example, arrange BIOS options such that the
system boots from a hard disk in the Ultrabay if one is present. If a hard disk is not in the
Ultrabay, it boots from the internal disk.
Dual boot
There ar ...