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Date: Wed, 15 Sep 2010 13:28:39 +0300
From: Zeus V Panchenko <zeus@ibs.dn.ua>
To: freebsd-geom@freebsd.org, olli@lurza.secnetix.de
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Subject: Re: storage configuration for Advanced Format
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Oliver Fromme (olli@lurza.secnetix.de) [10.09.15 12:57] wrote:
> It lets the partition start at 1 MB offset, which is of
> course aligned to 4k.  1 MB is also standard in Windows,
> I think, although I'm not sure why.  I usually let the
> first partition start at 64K, because the fdisk(1) default
> is a "geometry" with 63 sectors per track, so I let the
> first partition start at sector 65 in the first slice
> (63 + 65 = 128 sectors = 64Kb).
> 
> By using a fragment size of 4KB with the newfs command,
> you make sure that there will be no misaligned accesses.
> 

thanks mUch Oliver, i was lacking that explanation

another question is what is the minimum value for `gpart add -b' for
the bootable and not bootable disks?

-- 
Zeus V. Panchenko
IT Dpt., IBS ltd			      	        GMT+2 (EET)