22 Mar
2007
22 Mar
'07
5:50 p.m.
On Thu, 22 Mar 2007, David Betz wrote:
I have a MicroVAX II that is able to boot into Ultrix
4.3 single user mode.
If I type "mount" it says that /dev/ra0a is mounted on /. I assume that is my
ESDI hard drive since the drives plugged into my SDC-RQD11-EC ESDI controller
are the only ones plugged into my system. So, my question is, what would the
second drive on that controller be called? Would it be /dev/ra0b or
/dev/ra1a? In other words, what do the "0" and "a" parts of the
device name
mean? Is "0" the controller and "a" the device on that controller?
For /dev/raxy, x = the drive number and y = the partition. IIRC, the
convention for Ultrix is that a is the first partition and the c partition
covers the whole drive.
Your second disk could therefore be /dev/ra1a or /dev/ra1c assuming a
reasonable mapping from drive number to MSCP unit number.
I also have a TD Systems Viking SCSI controller in the system with a CD-ROM
drive attached. What device name would I use for that? I'd also like to know
how to address that drive from the MVII boot prompt so that I can boot
directly off of the CD-ROM.
That depends on the controller and how it emulates MSCP devices. At the
console ">>>" prompt, DUBx (where "x" is the drive number on
the
second controller)might work.
I don't think any of the MicroVAX-II boot roms supported "show device" at
the console, but you could try that to see what you get.
-Rick