From: Robert Nichols <rnicholsNOSPAM@comcast.net>
To: dm-crypt@saout.de
Subject: Re: [dm-crypt] yet another header reconstruction question
Date: Thu, 18 Feb 2016 06:53:04 -0600 [thread overview]
Message-ID: <na4erh$hl9$1@ger.gmane.org> (raw)
In-Reply-To: <trinity-9e9471f4-a8e1-4d5e-8897-799510e19987-1455785506815@3capp-webde-bap42>
On 02/18/2016 02:51 AM, Florian Dotzer wrote:
> I tried dd on files to replace the first 512 bytes of a file , but
> the target file was completely replaced with this command :
>
> dd if=512_bytes_with_fixed_header of=file_with_first_64_MB_of_md0 bs=512 count=1
When the target is a file, you need to include "conv=notrunc" so
that the file will not be truncated to zero length when it is
opened. That is not an issue when the target is a block device,
but there is no harm in using "conv=notrunc" there, too.
--
Bob Nichols "NOSPAM" is really part of my email address.
Do NOT delete it.
next prev parent reply other threads:[~2016-02-18 12:53 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <mailman.1.1455706801.5962.dm-crypt@saout.de>
2016-02-18 8:51 ` [dm-crypt] yet another header reconstruction question Florian Dotzer
2016-02-18 9:34 ` Michael Kjörling
2016-02-18 10:26 ` Sven Eschenberg
2016-02-18 12:53 ` Robert Nichols [this message]
[not found] <mailman.1.1455879602.30698.dm-crypt@saout.de>
2016-02-24 8:43 ` Florian Dotzer
2016-02-24 16:24 ` Arno Wagner
2016-02-16 11:32 Florian Dotzer
2016-02-16 12:01 ` Michael Kjörling
2016-02-16 15:01 ` Arno Wagner
2016-02-16 19:41 ` Sven Eschenberg
-- strict thread matches above, loose matches on Subject: below --
2016-02-15 16:07 [dm-crypt] Yet " Florian Dotzer
2016-02-15 17:04 ` Arno Wagner
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='na4erh$hl9$1@ger.gmane.org' \
--to=rnicholsnospam@comcast.net \
--cc=dm-crypt@saout.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.