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June 23, 2010 T13/2132-D Revision 3
Working Draft Enhanced Disk Drive - 4 (EDD-4) iii
Secretariat
Information Technology Industry Council
Approved mm.dd.yy
American National Standards Institute, Inc.
ABSTRACT
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 exabytes (16x10
18
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, I
2
O, and
other interfaces. In addition, this standard defines the following:
a) formatting required to make a CD or DVD bootable;
b) INT 13h services used to access devices <8GB; and
c) addressing information for Infiniband, Serial ATA, Hypertransport, and PCI Express
.
Draft
Draft