From: Scott Adderson (EMP) (Scott.Adderson@eml.ericsson.se)
Date: Fri Jan 31 2003 - 10:34:31 EST
Thanks to:
Karissa Stoker, Philip Ford, Subu Rama, Richard Wood, Eef Hartman, Lee Kendrick and Dimitri Avgoustakis for a rapid response about the device files. The consensus was 'insf -e' which did the job just fine. mknod was also suggested but not tried, I'll give that a go on my development machine some other time.
The CD-ROM still won't mount, so I guess that it may be u/s. I've added the software remotely so it's no big issue.
Cheers!
Scott
Replies summary below:
-----
Did you try running ioscan (with no options) then an insf -e. If that
doesn't work, you can use the mksf command.
-----
You can run insf -e to get your devices back. At least it should. If the
CD still does not work, then mount on other HP and NFS mount it to this
one.
-----
Use sam to recreate the device files
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Not sure what to do about your dodgy CD drive, but if you run "insf -e" you
should get your drivers back.
-----
Use "mknod" with the major from rdsk/c0t?d0 (any other SCSI disk) and the minor
from the /dev/dsk entry (the major's are different between "raw" and "block",
the minor's are not. As the major IS model dependant, I cannot give you the
right one to use, but just as an example:
brw-r----- 1 bin sys 31 0x010000 Nov 4 1999 /dev/dsk/c1t0d0
crw-r----- 1 bin sys 188 0x010000 Nov 4 1999 /dev/rdsk/c1t0d0
These are on a B160 with "narrow SCSI" cd-rom at address 0,
the mkmod for these are
mknod b 31 0x010000 /dev/dsk/c1t0d0
mknod c 188 0x010000 /dev/rdsk/c1t0d0
^ type (b is block, c is "raw")
^^ major, driver number
^^^^^^^^ minor, device addres
Of course, your values will differ.
PS: you can use "mksf" too, but then you'll need the right combination of
options, see the man page, for this device.
-----
You could try "insf -e"
Check the man page, -e will reinstall the special files for pseudo-drivers
and existing devices. This is useful for restoring special files if they
have been accidently removed.
-----
device files :
insf(1M)
man insf
or if you're lazy : insf -H path/to/cdrom
-----
-----Original Message-----
From: Scott Adderson (EMP) [mailto:Scott.Adderson@eml.ericsson.se]
Sent: 31 January 2003 14:41
To: 'hpux-admin@dutchworks.nl'
Subject: [HPADM] CD-ROM read problem + /dev/rdsk file recreation - HP-UX
10.20
Hi Admins,
I'm installing some software on a few C3000 workstations running 10.20 (Dec 99 core OS with June 2000 support plus bundles installed) from an HP-UX applications CD.
On one machine only, it returns an I/O error when trying to mount the CD-ROM. The monitoring system then sends a report to me telling me it can't read the table of contents on the CD and suggests I use a new CD. The CD will mount and read perfectly in the other workstations, so I'm suspecting either some sort of bug or the CD-ROM reader is broken...? Any thoughts on how to check or fix appreciated.
(...and as it's Friday...!) While trying various things later on to check I was mounting the CD properly, I got fat fingers and managed to delete the character device file for the CD-ROM at /dev/rdsk/c0t0d0 as well as it's link name. ioscan reports the device OK, but it only lists the block device file at /dev/dsk/c0t0d0 now. Is there any way I can recreate the file without rebuilding the OS?
TIA, I will summarise...
Scott
> ---------------------------------------------
> Scott Adderson
> Senior Engineer, Unix & CAD Support
Ericsson Global IS/IT.
Ericsson Mobile Communications (UK)
> scott.adderson@eml.ericsson.se
>
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