Universal Serial Bus Mass Storage Specification For Bootability

1 Introduction
When personal computers and similar devices are powered up, they typically load and begin executing the main operating system from a mass storage device such as a disk drive. This specification defines a set of commands and associated data sufficient to allow the loading of an operating system stored on a USB Mass Storage Class device.
1.1 Scope
This specification fully defines the minimum required set of CDBs and Data a USB Mass Storage device must implement in order for a host to boot from it. The commands defined herein are taken from other industry command set specifications. Some of these specifications conflict with each other in minor details.
The command definitions in this specification resolve the applicable conflicts.