cancel
Showing results for 
Search instead for 
Did you mean: 

System cant perform BOOT

Stefano_36
Frequent Advisor

System cant perform BOOT

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
7 REPLIES
Ravi_8
Honored Contributor

Re: System cant perform BOOT

Hi

GENVMUNIX must present in boot disk.

from SRM console
>> boot -f /GENVMUNIX
never give up
Johan Brusche
Honored Contributor

Re: System cant perform BOOT

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.

_JB_
Stefano_36
Frequent Advisor

Re: System cant perform BOOT

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
Frequent Advisor

Re: System cant perform BOOT

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
Frequent Advisor

Re: System cant perform BOOT

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
Honored Contributor

Re: System cant perform BOOT


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.

_JB_
Michael Schulte zur Sur
Honored Contributor

Re: System cant perform BOOT

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