A few things to add. I've never heard of media once it's held classified data being able to be removed without being physcaly destoryed. Classified is basicly a one way, unclassified -> Classified.
But it's worth tossing out there too, you HAVE to do cost-benefit on whats on the media. Assumeing the data gets out, worst case published on the front page of the WSJ or what ever, is it going to cause more than the cost of the disk in damages? If it is/could then you should just buy a replacement disk and destory the old one. If you decide to go with the rewriting method, that those of us who are apparently "Truely Paranoid" don't put much faith in, you should pay a recovery company to try and get your data back. See how good your erasure is/was. And depending on the number of disks you and the frequenacy you have to do it, you should repeat the process frequently. Again this is all going to cost money, there is no way to do what you ask for the price of $70 PC program. This is why I called them "Snake Oil" earlier. They basicly do a few passes of random or patterned writes, and call it good enough. And if that is good enough for you based on your cost-benefit then you can use the low level verify commands (atleast on Suns you could, I bet SGI has the same thing.) johno --- Send mail for the `bblisa' mailing list to `[EMAIL PROTECTED]'. Mail administrative requests to `[EMAIL PROTECTED]'.
