concluding from dd raw dump size to disk mfgr

[Polytropon]

On Wed, 30 Sep 2020 14:59:32 +0200, Christoph Kukulies wrote:
> [...]
> 
> > Am 30.09.2020 um 13:35 schrieb Polytropon <freebsd at edvax.de>:
> > 
> > On Wed, 30 Sep 2020 09:40:00 +0200, Christoph Kukulies wrote:
> >> I made a dd dump of a raw disk device the other day. The size of the 
> >> dump is exactly
> >> 
> >> 500107862016 bytes in size, corresponding to 997773168  sectors (512bytes).
> >> 
> >> I would like to dump this file back to a physical device. Best would be 
> >> the one which fits exactly that size. Unfortunately I presently don't 
> >> know what drive mfgr./type this corresponds to. Is there a way to find out?
> > 
> > A convenient way is to use the following command:
> > 
> > 	# diskinfo -v <device>
> > 
> > Also check the corresponding entry in the "dmesg" output.
> > 
> > Note that AF devices might prefer a sector size of 4kB (4039
> 
> 
> What is „AF“ devices?

This is short for "advanced format", indicating that those
devices use a sector size of 4096 bytes ("4K-drives") instead
of 512 bytes.



-- 
Polytropon
Magdeburg, Germany
Happy FreeBSD user since 4.0
Andra moi ennepe, Mousa, ...