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itanium, how to dd system disk

D O'Callaghan
Occasional Contributor

itanium, how to dd system disk

I want to blank the system disk on an Itainium SX200 Super Dome.

Is it possible to boot from a cdrom or ignite into single user mode and write the disks with zeros using dd ?

Frequent Advisor

Re: itanium, how to dd system disk


have a look at DRD.

Steven E. Protter
Exalted Contributor

Re: itanium, how to dd system disk


Yes, get the boot device from:
lvlnboot -v

prior to going single user.

This is not a good method however.

Better to do a generic OS install into the boot disk.

Steven E Protter
Owner of ISN Corporation
Honored Contributor

Re: itanium, how to dd system disk

Well, If I understand you want to be sure that a system disk would be never recoverable.

If you have two disk, boot on a good one and dd the bad disk is easy but if you asking for boot cdrom or ignite ...
I could suppose you have one disk only, the bad systeme disk which it's not bootable, I think you have to
1 - boot on a recovery shell mode [ ignite or cdrom ]
2 - load file dd if is not present on the recovery shell [ not sure ]
3 - recognize your disk with ioscan
4 - dd the bad disk
If the bad disk have a good system on it, you could try to boot single and made a dd on it.
rick jones
Honored Contributor

Re: itanium, how to dd system disk

If you want the contents of the disc to be "never" recoverable, then you need to physically destroy the disc, especially the oxide coatings on the platter(s).

If all you want to do is make it "really difficult" then booting from alternate media and scribbling all-over the disc several times with different patterns may suffice.

However, my recollection of past discussions is that "spared sectors" will not get wiped by scribbling via stuff like dd...
there is no rest for the wicked yet the virtuous have no pillows
Viktor Balogh
Honored Contributor

Re: itanium, how to dd system disk

I think you do not need to restart your system in single user mode, nor to boot from another media. You can dd the disks directly. At least that's the way we do it for our customer. After dd'ing the disk you only need to shutdown the system. The main system won't have problems since it's in memory.
Unix operates with beer.