Full Disclosure mailing list archives
Re: Erasing a hard disk easily
From: Darren Reed <avalon () cairo anu edu au>
Date: Fri, 16 Jul 2004 18:44:35 +1000 (Australia/NSW)
In some mail from Gary E. Miller, sie said:
Hash: SHA1 Yo Darren! On Thu, 15 Jul 2004, Darren Reed wrote:Have you ever actually used format on Solaris to format a SCSI disk ?Yes, many times.
...
If I have been simplifying things a bit much it is because I am not sure how many other folks out there have EE degrees, have advanced disk drive electronics experience and really need to know the nitty gritty details.
See below. ...
The trick is not so much read/write percentages, like has been discussed here, but off-center tracking and subtle timing/speed changes.
... Yup, this is all old news. Have you got something new to say ? There are papers around on what's required to read back data from a HDD and what the methods exploit. Something that can't be found from a reference of Peter Gutman's home page: http://www.cs.auckland.ac.nz/~pgut001/ Maybe if you said something about how you implemented the format, etc, algorithms or what they did compared to what dd does, whether or not they write "raw data" to the disk, to create a formatted track, as opposed to just writing to the formatted blocks. For reference, Amigas (and other, older computers) would let you access floppies in a number of ways, and I imagine that the hard drive would have its own for read/write vs format or not? Can you interact with SCSI mode pages and change what read/write gives you? Did/do people implement that and just not document it? It would be nice if further email didn't sound like an extract from your C.V./resume. I don't need to know (or care about) how many times you've worked for X, Y & Z, etc, or even when. Sorry for being harsh but I'd rather see the signal to noise ratio try and tip in the signal direction, if possible. Darren _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.netsys.com/full-disclosure-charter.html
Current thread:
- Re: Re: Erasing a hard disk easily, (continued)
- Re: Re: Erasing a hard disk easily Maarten (Jul 13)
- RE: Erasing a hard disk easily Jos Osborne (Jul 13)
- Re: Erasing a hard disk easily Aditya, ALD [ Aditya Lalit Deshmukh ] (Jul 13)
- Re: Erasing a hard disk easily Maarten (Jul 14)
- Re: Erasing a hard disk easily Darren Reed (Jul 14)
- Re: Erasing a hard disk easily James Sneeringer (Jul 14)
- Re: Erasing a hard disk easily Larry Apolonio (Jul 14)
- Re: Erasing a hard disk easily Gary E. Miller (Jul 14)
- Re: Erasing a hard disk easily Darren Reed (Jul 15)
- Re: Erasing a hard disk easily Gary E. Miller (Jul 15)
- Re: Erasing a hard disk easily Darren Reed (Jul 16)
- Re: Erasing a hard disk easily Kurt Seifried (Jul 16)
- Re: Erasing a hard disk easily Gary E. Miller (Jul 16)
- Re: Erasing a hard disk easily Aditya, ALD [ Aditya Lalit Deshmukh ] (Jul 13)
- Re: Erasing a hard disk easily Dave Horsfall (Jul 15)
- Re: Erasing a hard disk easily Vincent Archer (Jul 15)
- Re: Erasing a hard disk easily José María Mateos (Jul 15)
- Re: Erasing a hard disk easily wszumera (Jul 15)
- Re: Erasing a hard disk easily Maarten (Jul 13)