Continuing tale of the Powerserver 320H

From: Carlos Murillo <cmurillo_at_manizales.autonoma.edu.co>
Date: Fri Nov 23 13:44:24 2001

A kind soul sent me the AIX dianostics disk set to try to break
into the powerserver 320h, and I am having mixed results. With
the switch in service mode, I was able to make the machine boot
off the floppies; eventually it reaches a menu:

AIX 3.2 INSTALLATION AND MAINTENANCE

Select the number of the task that you want to perform

>>>> 1 Install AIX
     2 Install a system that was created with the SMIT "Backup the System"
       function or the "mksysb" command
     3 Install this system for use with a "/usr" server.
     4 Install a limited function maintenance shell.

Type the number of your selection, then press "Enter": 4

Type 'exit' to return to the main menu.
Use the getrootfs command to access file systems that
reside on the root volume group.

#ls
ls: not found
#vi
vi: not found
#cat /etc/mnttab

#getrootfs
usage: /usr/sbin/getrootfs [-f] diskname
                  -f disregard status of hd5
Available disks: location:
         hdisk0 00-01-00-00

#getrootfs -f hdisk0
Importing Volume Group...
rootvg
/dev/rhd4 (/): ** Unmounted cleanly - Check supressed
/dev/rhd2 (/usr): ** Unmounted cleanly - Check supressed
/usr/sbin/getrootfs: mount: not found
checking all mounts and the existance of df
/usr/sbin/getrootfs: mount: not found
/usr is not mounted

#ls
ls: not found
#mount
mount: not found
#umount
Usage: umount [-sf] {-a|-n Node|-t Type|all|allr|Device|File|directory|File
System}
#

Further investigation revealed that if I "umount /usr", then there is
some mount executable in the ram disk. Ok, so I make /usr1, copy all
the stuff in the ramdisk /usr to /usr1 (also in ramdisk) and run
getrootfs again. Still no luck mounting /usr . So, using the tools
that I copied into /usr1 I mount /dev/hd4 in /mymnt/hd4 and /dev/hd2
in /mymnt/hd2 ; further investigation reveals that there indeed exist
directories /mymnt/hd2/bin, /mymnt/hd2/lib, /mymnt/hd4/etc and so
on; I seem to have mounted / and /usr from the HD correctly.
I still cannot use any executables in the HD, though:

#/mymnt/hd2/bin/ls
killed

typing
# cat /mymnt/hd4/etc/passwd

reveals that AIX seems to have shadow passwords but I can't find any
of the usual files (master* etc) .

# passwd
cannot execute

#/mymnt/hd4/bin/passwd
killed

So, does anybody know what's going on?

carlos.



-- 
Carlos E. Murillo-Sanchez    email: carlos_murillo_at_spammers.not.ieee.org
Universidad Autonoma de Manizales, Manizales, Colombia
----
"I'm not going to get involved in peer-review mumbo-jumbo." -- John Doolittle,
House Republican, confronted by a reporter with the peer-review nature of
the environmental studies he was dismissing.  "Peer review is in fact the
great mumbo-jumbo detector." -- Carl Sagan.
Received on Fri Nov 23 2001 - 13:44:24 GMT

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