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Formatting disks

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kw_1
Contributor

Formatting disks

We migrated our data from our old storage to a new storage device. What is the best way to format the old drives so that no one can retrieve any data from the old storage? We like to sell it but can't have the data retrievable by its new owner.
3 REPLIES
Helen French
Honored Contributor
Solution

Re: Formatting disks

The same issue has been discussed here a lot of times. This is one of them with lot of solutions:

http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0x24b53a7b3682d611abdb0090277a778c,00.html

Do a search on forums if you need more.
Life is a promise, fulfill it!
A. Clay Stephenson
Acclaimed Contributor

Re: Formatting disks

Generally nothing more complicated than a dd will be needed (at least for moderate levels of security).

e.g.
dd if=/dev/zero of=/dev/rdsk/c1t5d0 bs=64k

A more robust method (if you are on 11.11 and have installed the strong random number generator patch is like the above except if=/dev/urandom. In this case, rather than NUL's random characters will be written.
If it ain't broke, I can fix that.
James R. Ferguson
Acclaimed Contributor

Re: Formatting disks