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physical device name when booted different then at ok prompt

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Operating Systems Solaris physical device name when booted different then at ok prompt
# 1  
Old 07-29-2010
physical device name when booted different then at ok prompt
Hi all,

I am experimenting with solaris.

I noticed that when the machine is booted the physical device name of the root device is different then when I am at the ok prompt:

Code:
# mount | head -1
/ on /dev/dsk/c1t1d0s0

Code:
# ls -l /dev/dsk/c1t1d0s0 
lrwxrwxrwx   1 root     root          44 jul 26 23:56 /dev/dsk/c1t1d0s0 -> ../../devices/pci@1f,0/pci@1/scsi@8/sd@1,0:a

Here the name is "sd" while in the eeprom:
Quote:
eeprom | grep nvramrc=
nvramrc=devalias mydev /pci@1f,0/pci@1/scsi@8/disk@1,0:a
Here it is called "disk".

Why is this and how can I know what the device name should be at the ok prompt to boot from?
# 2  
Old 07-29-2010
OBP uses the term "disk" for any type of disk. The kernel uses "sd" for the name of a SCSI disk. Other types of disks have kernel names starting with "cmdk", "dsd", "ata", etc.
This User Gave Thanks to fpmurphy For This Post:
deadeyes
# 3  
Old 07-29-2010
Quote:
Originally Posted by fpmurphy
OBP uses the term "disk" for any type of disk. The kernel uses "sd" for the name of a SCSI disk. Other types of disks have kernel names starting with "cmdk", "dsd", "ata", etc.
So there is no possibility to retrieve the physical device name that you have to use in the openboot prom from the running system? I would always have to think about using "disk" in the name.

Thanks for your answer!
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