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Re: Formatting Drives (Clearing Tru64)

 
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Paul Stanard
Regular Advisor

Re: Formatting Drives (Clearing Tru64)

Thanks for everyones advice. I will probably use the dd command several times
Paul Stanard
Regular Advisor

Re: Formatting Drives (Clearing Tru64)

I booted the machine from the Installation disk and Exited the installer. I ran a showfdmn -k (usr_domain,data_domain) and the system can find neither domain. Was I supposed to issue those commands from the console prompt >>>?
Joris Denayer
Respected Contributor

Re: Formatting Drives (Clearing Tru64)

Paul,

showfdmn looks in /etc/fdmns for the filedomainname that you specify.
When you boot from CD, /etc/fdmns certainly does't contain a directory usr_domain or root_domain. So, it will find anything at all.

Following procedure should work.

1) Boot your system from the original bootdisk
2) Run now the showfdmn commands for the specific domains
3) Note the device names on a paper ;-)
4) check with hwmgr the bus/target/lunnr of these devices (fi: hwmgr -view dev)
5) Boot from the cd and go in the administration shell
5) # dn_setup -boot (to create the devices)
6) Now search for the devices with the same Bus/Target/Lun combination
You can try following command
# file /dev/rdisk/dsk*c

7) When you have found the device, doublecheck with disklabel if this is really the correct one.

8) Now, you can do your dd wizardry

Joris
To err is human, but to really faul things up requires a computer
Paul Stanard
Regular Advisor

Re: Formatting Drives (Clearing Tru64)

When u say the device names are you referring to the volume name ie /dev/disk/dsk5c for example
Joris Denayer
Respected Contributor

Re: Formatting Drives (Clearing Tru64)

Paul,

Yes,

read 3 as follows
3) Note the volume names on a sheet of paper

Joris
To err is human, but to really faul things up requires a computer
Paul Stanard
Regular Advisor

Re: Formatting Drives (Clearing Tru64)

How long does it usually take. It has been running for about an hour
Joris Denayer
Respected Contributor

Re: Formatting Drives (Clearing Tru64)

Paul,

What is running for an hour ?

Joris
To err is human, but to really faul things up requires a computer
Paul Stanard
Regular Advisor

Re: Formatting Drives (Clearing Tru64)

dd command on the disk that contains the data
dsk5h to be exact
Paul Stanard
Regular Advisor

Re: Formatting Drives (Clearing Tru64)

usr_domain /dev/vol/rootdg/usrvol
root_domain /dev/vol/rootdg/rootvol
Stephen A. Landers
New Member

Re: Formatting Drives (Clearing Tru64)

I have hundreds of Gbytes to overwrite on an array we are returning to the vendor. My servers report no /dev/zero file available when trying the dd command. How can I get past this obstacle or is there a better solution when we are trying to clear the disks and verify ourselves? Thanks