HP-UX HB v13.00 Ch-21 - Itanium

HP-UX Handbook – Rev 13.00 Page 11 (of 35)
Chapter 21 Itanium Architecture (IA)
October 29, 2013
FAT-16 for removable media. The system partition is required on a bootable disk for the IPF
platform. It is used by the IPF BIOS to locate the HP-UX bootloader (hpux). The following
picture shows a Itanium boot disk under LVM control:
For a hard disk, the system partition is a contiguous grouping of sectors on the disk, where the
starting sector and size are defined by the EFI partition table, which resides on the second logical
block of the hard disk, and/or by the Master Boot Record (MBR), which resides on the first
sector of the hard disk. MBR is Intel legacy abd ignored by EFI firmware.
The EFI System Partition can contain directories, data files, and EFI Images. The EFI system
firmware may search the \EFI directory of the EFI system partition to find possible EFI images
that can be loaded. The HP-UX bootloader is one example of an EFI Image.
From the OS point of view the device file /dev/dsk/c0t0d0 would represent the whole disk.
c0t0d0s1 would represent the EFI system partition (usually 100MB at UX 11.22 and 500MB at
UX 11.23) and c0t0d0s2 would represent the HP-UX partition. So the HP-UX partition on an
IPF system represents a whole LVM boot disk on a PA system. Hence when dealing with
Itanium boot disks you need to specify the s2 device file for e.g. pvcreate, pvdisplay, etc.
NOTE: Non-bootable disks are treated exactly the same on IPF and PA systems since they are
not partitioned and do not contain EFI.
NOTE: As of UX 11.23 there is a HP Service Partition c0t0d0s3 (FAT-32) right behind the HP-
UX partition. The service partition is created by Diagnostics installation. It’s default size is
400MB. It can be accesses by the commands efi_ls(1M), efi_cp(1M) etc. After cold install it
c0t0d0
c0t0d0s1
c0t0d0s2
c0t0d0s3