1. A method, in a data processing system, for isolation of device namespace in a root volume group workload partition, the method comprising: populating, by a global operating system in the data processing system, root file systems on a workload partition disk in a global namespace associated with the global operating system; clearing, by the global operating system in the data processing system, volume group, logical volume, and file system names for the workload partition disk from the global namespace; booting, by the global operating system in the data processing system, a workload partition from a scratch file system, wherein the scratch file system stores information for booting the workload file system; configuring, by the global operating system in the data processing system, the workload partition disk with the root volume group; importing, by the global operating system in the data processing system, the workload partition disk into a workload partition namespace associated with the workload partition; and renaming, by the global operating system in the data processing system, logical volume names of the root volume group in the workload partition namespace.