本标准描述了当前在IA-32和IA-64兼容个人体系结构上使用的服务 计算机系统。这些服务由BIOS固件提供，以支持高达16兆字节的硬盘 （16x1018字节）。该标准还提供BIOS级别的服务，用于确定关系 在BIOS设备号和连接到个人计算机的物理大容量存储设备之间。 本标准中定义的服务可应用于具有ATA、ATAPI、， SCSI、USB、光纤通道、1394、I2O和其他接口。此外，本标准定义如下:1。使CD或DVD可引导所需的格式化； 2.用于访问<8GB设备的INT 13服务；3.Infiniband、串行ATA、Hypertransport和PCI Express的寻址信息。

This standard describes services currently in use on IA-32 and IA-64 compatible architecture personal computer systems. These services are provided by BIOS firmware to support hard disks up to 16 megaterabytes (16x1018 bytes). This standard also provides BIOS level services for determining the relationship between BIOS device numbers and the physical mass storage devices attached to the personal computer. The services defined in this standard can be applied to mass storage devices with ATA, ATAPI, SCSI, USB, Fibre Channel, 1394, I2O, and other interfaces. In addition, this standard defines the following:1. Formatting required to make a CD or DVD bootable;2. INT 13 services used to access devices < 8GB;3. Addressing information for Infiniband, Serial ATA, Hypertransport, and PCI Express.