This section contains examples that you can use as a model. The first two examples are for ARC paths on x86-based computers. The last example is the boot entry on a DEC Alpha AXP 150 computer, and should be good for all RISC-based computers with similar disk configurations.
This example for an x86-based computer has the following disks and controllers:
Each hard disk has a single, 1 GB primary partition. Partitions 1 and 2 are on the first 2940, partitions 3 and 4 are on the second 2940, and partitions 5 and 6 are on the 1542. These are the ARC paths that you would have in the Boot.ini file if each partition had a copy of Windows NT installed in a folder named Winnt:
For partitions 3 and 4, Ntbootdd.sys is a copy of Aic78xx.sys. For partitions 5 and 6, Ntbootdd.sys is a copy of Aha154x.sys. For partitions 1 and 2, you could also use the following paths:
provided that you had an Ntbootdd.sys file that was a copy of Aic78xx.sys. However, Windows NT Setup always use the multi() syntax for the first two SCSI disks.
This example is for an x86-based computer with the following disks and controllers:
The three EIDE disks each have a single 1 GB partition. Partitions 1 and 2 are on the primary channel of the EIDE controller, and partition 3 is on the secondary channel.
The SCSI disk has four 1 GB partitions. Partitions 4, 5, 6 and 7 are on the SCSI disk. Each partition would have the following ARC paths in the Boot.ini file, assuming that each partition has Windows NT installed in the Winnt folder:
Loading Windows NT from partitions 4 through 7 requires that the Ntbootdd.sys file be a copy of Aic78xx.sys.
On a RISC-based computer, all boot paths are defined in the NVRAM. When creating a new boot selection for a RISC-based computer, the firmware menus prompt you for the information to enter. There is an example for defining a boot selection in the section titled "Creating Alternate Boot Selections for a RISC-based Computer," presented later in this chapter.
The following example is a boot selection on a DEC Alpha AXP 150. The computer has a single hard disk at ID 0, which has a 4 MB system partition and a 396 MB boot partition. Windows NT is installed on the boot partition in a folder named Winnt and the OSLOADER folder is also named Winnt, although it is on the system partition. The boot selection has the following values: