Inventors:
William Duncan - Berthoud CO, US
John Kennedy - Longmont CO, US
International Classification:
G06F009/445
Abstract:
Provided are a method, system, and program for operating a computer system, wherein the computer includes at least two storage units. A boot routine from an operating system on a first storage unit of the at least two storage units designated as the primary storage unit is executed. A second storage unit of the at least two storage units comprises a spare storage unit, wherein both the storage units maintain copies of the operating system and file system in the computer. If the boot routine does not succeed, then the second storage unit is designated as the primary storage unit, wherein the first storage unit is the spare storage unit after the second storage unit is designated as the primary storage unit. After designating the second storage unit as the primary storage unit, the boot routine is executed from an operating system on the second storage unit designated as the primary storage unit.