Sunday, June 30, 2024

Re: accidentally overwritten wrong drive with DD, please help

On Sat, Jun 29, 2024 at 03:00:42AM -0400, Steve Litt wrote:
> Anon Loli said on Fri, 28 Jun 2024 21:43:00 +0000
>
>
> >I have autism, please be patient ._.
>
> I know little about autism. Is one symptom aversion to
> revisiting/rethinking policy decisions in the face of new situations
> where those policy decisions cause you trouble?
>
> Policy decisions are a necessary part of life. Nobody wants to do a
> cost/benefit analysis before performing a task they've done 1000 times
> before. But once in a while policies produce problems and should either
> be changed or temporarily, for this one situation, discarded. In my
> opinion you're in just such a situation now. My suggestion is you pick a
> role model without autism, and pretend to be him while making decisions
> in this circumstance.
>
> Among my other professions I'm a technical writer, and the #1
> requirement for tech writing is elimination of all ambiguity. If I were
> in your shoes, I'd make a block diagram of your exact situation.
> Inkscape is a great tool for block diagrams. The block diagram, plus
> some narrative text explaining and describing the situation, in the
> exact terms as printed on the diagram, goes a long way toward ambiguity
> elimination.
>
> SteveT
>
> Steve Litt
>
> http://444domains.com
>

Why make a block diagram, did you not understand my situation? Did I not
explain it well?
I used and will utilize block diagrams/flowcharts in my projects, so I
understand how important they are, humans and animals are good visual learners

It's simple I think (although there were some difficulties in the mid-section),
here comes a primitive flowchart:


1. I had a drive SSD sd2a which had a 200G crypto volume sd3i which was mounted
on /mnt/ssd, all 1 partition

2. I did a `dd if=/dev/urandom of=/dev/rsd3c bs=1m` for a little over 74M then
I stopped approximately 7 seconds later

3. After the DD, I couldn't access /mnt/ssd, it said no such file or directory

4. I now have a HDD which I repurposed to be my backup, and I copied /dev/rsd3i
over to the HDD as an image

4.5. and verified with sha512 that rsd3i is same as /mnt/hdd/ssdimage, even
though the ssdimage on the backup drive is 19G larger in size

5. Whilst writing this e-mail I realized that I might have made a fatal mistake.
I think that I backed up rsd3i instead of rsd3c, do you agree that this is a
worse mistake than the DD overwrite of the wrong drive?
Why you might ask? Because the sd3 crypto volume isn't mounted anymore, IDK if
OpenBSD got bored with it being broken for 1 week, or I somehow accidentally
unplugged it (I was being extremely careful), whatever the case might be, I no
longer can make a backup of rsd3c, so all that I now have is, sadly, only a
rsd3i

6. I was told to use fsdb, photorec from testdrive and/or sleuthkit to try and
recover my DDd over filesystem and files.


So, I guess that I needed a copy of rsd3c, not rsd3i? Am I screwed? I'm so
stupid :d

P.S. I think that MTpaint is much better in terms of dependency bloat hell
compared to Inkscape

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