System cant perform BOOT

[Stefano_36]

Hi,

my system Tru64 5.1 doesnt boot.
Message on console is :

vfs_mountroot cannor mount root
no disk available for dump

and stops in halt state

The same problem i've alos trying to start
in single-user mode using 'boot -fl s'

How can i recover the system or to boot
using GENVMUNIX from a different disk ?
I mean the GENVMUNIX is NOT into the / (dka0)
but in a different disk (dka200) !!!!!!!!!!!!

Thanks

[Ravi_8]

Hi

GENVMUNIX must present in boot disk.

from SRM console
>> boot -f /GENVMUNIX

[Johan Brusche]

Stefano,

You will have to boot from the distribution CD-medium, exit from the installation GUI into the shell and try to mount the filesystem in the a-partition of dka0.

# hwmgr view device (to find dsk-# of dka0)
# cd /etc/fdmns
# mkdir tmp_root
# cd tmp_root
# ln -s /dev/disk/dsk[n]
# mount tmp_root#root /mnt

If it fails to mount, try....

#/sbin/advfs/fixfdmn tmp_root

Good luck...
__ Johan.

[Stefano_36]

Hi Ravi, the genvmunix file is onto another disk. It isn't onto the /.

How can I move that onto the / event the system cannot boot (i tried also in single user mode but it didnt work) ?

Must I boot only from CDROM ?

Do you have a whole procedure to follow ?

Thanks
Stefano

[Stefano_36]

Hi Joahn, a lot of problem :

1) how can i exit from the installation procedure, must i wait till the GUI shows and then select Quit or can I boot in a different mode to have directly the prompt ?

2) when i have prompt using cd /etc/fdmns doesnt worj due the fdmns isnt a directory but a link to ../var/fdmns ??????

3) you said 'mkdir tmp_root' but i should work onto the / from the CDROM ! I cant mkdir any dir !

4) the hwmgr biew device shows to me all Unknown for the device in the machine

Thanks

[Stefano_36]

Hi to all,

I've the Installation CDROM, please someone have the whole procedure to start with the genvmunix from CDROM but without start the installation and then remount all file system ??????

Thanks

[Johan Brusche]

Stefano,

When you cd to /etc/fdmns, you should end up in /var/fdmns. While booted from CD /var is a writeable memory filesystem, so in /var/fdmns, you can do a mkdir tmp_root.

If the disks on SCSI bus#0 all show up as unknown in hwmgr view device, then you probably have a problem with that SCSI bus/controller and it should be repaired then.

Recovering a root disk is described in the doc
http://h30097.www3.hp.com/docs/base_doc/DOCUMENTATION/V51B_HTML/ARH9FETE/BCKPMNTC.HTM#recovery-prep

Beware to not use "disklabel -wr" and mkfdmn or newfs if you want to re-use the filesystems on dka0.

__ Johan.

[Michael Schulte zur Sur]

Hi,

I usually let the cdrom start and just when it says preparing for installation I hit ^C and use restart nogui and exit.
The root file system is read only.
That's the reason fdmns is a link.
cd /etc/fdmns
mkdir tmp_root
should work.

greetings,

Michael