Inside Solaris™ 9

Physical Device Name

Before the operating system (OS) is loaded, the system locates a particular device through the full device pathname. Full device pathnames are described in Chapter 10, “OpenBoot.” After the kernel is loaded, however, a device is located by its physical device pathname. Physical device names represent the full device pathname for a device. Note that the two names have the same structure. For example, let’s view the full device pathname for a SCSI disk at target 0 by typing show-devs at the OpenBoot prompt. The full device pathname is displayed as follows:

/iommu@f,e0000000/sbus@f,e0001000/espdma@f,400000/esp@f,800000/sd 

Now let’s look at the corresponding physical device name from the OS level. Use the dmesg command, ...